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Train vs. Locomotive — What's the Difference?

By Maham Liaqat & Urooj Arif — Updated on April 20, 2024
A train is a series of vehicles that travel on railway tracks, whereas a locomotive is the engine vehicle that powers the train and pulls the cars.
Train vs. Locomotive — What's the Difference?

Difference Between Train and Locomotive

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Key Differences

A train typically refers to the whole series of rail vehicles or carriages connected together that travel along a track. In contrast, a locomotive is specifically the powerful engine vehicle used to move the train along the track.
Trains are composed of multiple cars which can include passenger cars, freight cars, and other specialized types of rail vehicles. On the other hand, the locomotive is designed to provide the motive power and does not typically carry passengers or freight itself, except for necessary crew and equipment.
While trains can be powered by locomotives using various energy sources like diesel, electricity, or steam, locomotives themselves are categorized based on their power source, such as diesel locomotives, electric locomotives, or steam locomotives.
In operation, trains depend on locomotives to pull or push them along the tracks. The locomotive can be situated at the front, middle, or rear of a train, depending on the train’s design and operational needs, whereas the configuration of the train cars can vary widely depending on their intended use.
When discussing the operation and scheduling of railway transport, the term "train" is used to refer to the whole set of cars that move as a single unit. Meanwhile, the locomotive may be referred to specifically when discussing aspects of power, maintenance, or capability.
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Comparison Chart

Definition

Series of rail vehicles traveling on tracks
Engine vehicle that powers and pulls a train

Composition

Passenger or freight cars, sometimes mixed
Primarily the engine and crew compartments

Power Source

Powered by the locomotive
Uses diesel, electricity, or steam

Function

Carries passengers or freight
Provides motive power to move the train

Positioning

Can consist of multiple locomotives and cars
Usually at the front, middle, or back

Compare with Definitions

Train

Typically powered by a locomotive.
The train was powered by a new electric locomotive.

Locomotive

Essential for the train's movement.
The malfunctioning locomotive caused a delay in the train schedule.

Train

A series of connected vehicles traveling on railway tracks.
The passenger train travels between cities.

Locomotive

Can be positioned differently in a train.
The locomotive was positioned at the rear in a push-pull configuration.

Train

Moves as a single unit in scheduled services.
The daily commuter train arrives at 7.00 AM.

Locomotive

Can be powered by diesel, electricity, or steam.
The old steam locomotive is a tourist attraction now.

Train

Can carry passengers or freight.
Freight trains transport goods across the country.

Locomotive

Does not typically carry passengers or freight.
The locomotive’s cab houses only the engineer and necessary controls.

Train

May include various car types.
The train included dining and sleeper cars.

Locomotive

Engine vehicle that powers a train.
The locomotive pulled a long line of freight cars.

Train

A train is a form of rail transport consisting of a series of connected vehicles that generally run along a railroad (or railway) track to transport passengers or cargo (also known as "freight" or "goods"). The word train comes from the Old French trahiner, derived from the Latin trahere meaning 'to pull, to draw'.Motive power for a train is provided by a separate locomotive or individual motors in a self-propelled multiple unit.

Locomotive

A locomotive or engine is a rail transport vehicle that provides the motive power for a train. If a locomotive is capable of carrying a payload, it is usually rather referred to as a multiple unit, motor coach, railcar or power car; the use of these self-propelled vehicles is increasingly common for passenger trains, but rare for freight (see CargoSprinter and Iron Highway).

Train

Teach (a person or animal) a particular skill or type of behaviour through sustained practice and instruction
The scheme trains people for promotion
The dogs are trained to sniff out illegal stowaways

Locomotive

A self-propelled vehicle, usually electric, diesel, or steam-powered, for pulling or pushing freight or passenger cars on railroad tracks.

Train

Point or aim something, typically a gun or camera, at
The detective trained his gun on the side door

Locomotive

A driving or pulling force; an impetus
"The US could no longer serve as the locomotive for the world economy" (George Soros).

Train

Go by train
Charles trained to London with Emma

Locomotive

Of, relating to, or involved in locomotion.

Train

Entice (someone).

Locomotive

Serving to put into motion or propel forward
"It may be that the founding fathers overestimated the locomotive force of the collective and mutual self-interest" (Ian Davidson).

Train

A series of connected railway carriages or wagons moved by a locomotive or by integral motors
A freight train
The journey took two hours by train

Locomotive

Able to move independently from place to place.

Train

A number of vehicles or pack animals moving in a line
A camel train

Locomotive

Of or relating to a self-propelled locomotive.

Train

A long piece of material attached to the back of a formal dress or robe that trails along the ground
The bride wore a cream silk dress with a train

Locomotive

Of or relating to travel.

Train

A trail of gunpowder for firing an explosive charge.

Locomotive

(rail transport) The power unit of a train that pulls the coaches or wagons.
Rolling stock

Train

A series of connected railroad cars pulled or pushed by one or more locomotives.

Locomotive

(rare) A traction engine.

Train

A long line of moving people, animals, or vehicles.

Locomotive

(slang) A cheer characterized by a slow beginning and a progressive increase in speed.

Train

The personnel, vehicles, and equipment following and providing supplies and services to a combat unit.

Locomotive

(archaic) Any of various early road vehicles, steam-powered, etc., forerunners of the modern car.

Train

A part of a gown that trails behind the wearer.

Locomotive

(economics) A country which drives the world economy by having a high level of imports, such as the United States.

Train

A staff of people following in attendance; a retinue.

Locomotive

Of or relating to locomotion.

Train

An orderly succession of related events or thoughts; a sequence.

Locomotive

Of or relating to the power unit of a train which does not carry passengers or freight itself.

Train

A series of consequences wrought by an event; aftermath.

Locomotive

Moving, or capable of motion.

Train

A set of linked mechanical parts
A train of gears.

Locomotive

Moving from place to place; changing place, or able to change place; as, a locomotive animal.

Train

A string of gunpowder that acts as a fuse for exploding a charge.

Locomotive

Used in producing motion; as, the locomotive organs of an animal.

Train

To coach in or accustom to a mode of behavior or performance.

Locomotive

A locomotive engine; a self-propelling wheel carriage, especially one which bears a steam boiler and one or more steam engines which communicate motion to the wheels and thus propel the carriage, - used to convey goods or passengers, or to draw wagons, railroad cars, etc. See Illustration in Appendix.

Train

To make proficient with specialized instruction and practice.

Locomotive

A wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks

Train

To prepare physically, as with a regimen
Train athletes for track-and-field competition.

Locomotive

Of or relating to locomotion

Train

To cause (a plant or one's hair) to take a desired course or shape, as by manipulating.

Train

To point or direct (a gun or camera, for example) at something.

Train

To let drag behind; trail.

Train

To give or undergo a course of training
Trained daily for the marathon.

Train

To travel by railroad train.

Train

Elongated or trailing portion.

Train

The elongated back portion of a dress or skirt (or an ornamental piece of material added to similar effect), which drags along the ground.
Unfortunately, the leading bridesmaid stepped on the bride's train as they were walking down the aisle.

Train

A trail or line of something, especially gunpowder.

Train

The tail of a bird.

Train

(obsolete) The tail of an animal in general.

Train

(poetic) The elongated body or form of something narrow and winding, such as the course of a river or the body of a snake.

Train

(astronomy) A transient trail of glowing ions behind a large meteor as it falls through the atmosphere or accompanying a comet as it nears the sun; tail.

Train

An animal's trail or track.

Train

Something dragged or laid along the ground to form a trail of scent or food along which to lure an animal.

Train

(obsolete) Gait or manner of running of a horse.

Train

Connected sequence of people or things.

Train

A group of people following an important figure such as a king or noble; a retinue, a group of retainers.

Train

A group of animals, vehicles, or people that follow one another in a line, such as a wagon train; a caravan or procession.
Our party formed a train at the funeral parlor before departing for the burial.

Train

A group or class of people.

Train

(military) The men and vehicles following an army, which carry artillery and other equipment for battle or siege.

Train

A sequence of events or ideas which are interconnected; a course or procedure of something.

Train

A set of things, events, or circumstances that follow after or as a consequence; aftermath, wake.

Train

(obsolete) State of progress, status, situation (in phrases introduced by in a + adjective); also proper order or situation (introduced by in or in a alone).
In a fair / better / worse train

Train

A set of interconnected mechanical parts which operate each other in sequence.

Train

A series of electrical pulses.

Train

A series of specified vehicles (originally tramcars in a mine as usual, later especially railway carriages) coupled together.

Train

A mechanical (traditionally steam-powered, now typically diesel or electrical) vehicle carrying a large number of passengers and freight along a designated track or path; a line of connected cars or carriages considered overall as a mode of transport; (as uncountable noun) rail or road travel.
The train will pull in at midday.

Train

A long, heavy sleigh used in Canada for the transportation of merchandise, wood, etc.

Train

(computing) A software release schedule.

Train

An act wherein series of men line up and then penetrate a person, especially as a form of gang rape.

Train

Treachery; deceit.

Train

A trick or stratagem.

Train

A trap for animals, a snare; (figuratively) a trap in general.

Train

A lure; a decoy.

Train

A live bird, handicapped or disabled in some way, provided for a young hawk to kill as training or enticement.

Train

(obsolete) train oil, whale oil.

Train

(intransitive) To practice an ability.
She trained seven hours a day to prepare for the Olympics.

Train

(transitive) To teach and form (someone) by practice; to educate (someone).
You can't train a pig to write poetry.

Train

(intransitive) To improve one's fitness.
I trained with weights all winter.

Train

(intransitive) To proceed in sequence.

Train

(transitive) To move (a gun) laterally so that it points in a different direction.
The assassin had trained his gun on the minister.

Train

To encourage (a plant or branch) to grow in a particular direction or shape, usually by pruning and bending.
The vine had been trained over the pergola.

Train

To trace (a lode or any mineral appearance) to its head.

Train

To create a trainer for; to apply cheats to (a game).

Train

To draw (something) along; to trail, to drag (something).

Train

To trail down or along the ground.

Train

To draw by persuasion, artifice, or the like; to attract by stratagem; to entice; to allure.

Train

To draw along; to trail; to drag.
In hollow cubeTraining his devilish enginery.

Train

To draw by persuasion, artifice, or the like; to attract by stratagem; to entice; to allure.
If but a dozen FrenchWere there in arms, they would be as a callTo train ten thousand English to their side.
O, train me not, sweet mermaid, with thy note.
This feast, I'll gage my life,Is but a plot to train you to your ruin.

Train

To teach and form by practice; to educate; to exercise; to discipline; as, to train the militia to the manual exercise; to train soldiers to the use of arms.
Our trained bands, which are the trustiest and most proper strength of a free nation.
The warrior horse here bred he's taught to train.

Train

To break, tame, and accustom to draw, as oxen.

Train

To lead or direct, and form to a wall or espalier; to form to a proper shape, by bending, lopping, or pruning; as, to train young trees.
He trained the young branches to the right hand or to the left.

Train

To trace, as a lode or any mineral appearance, to its head.
Train up a child in the way he should go; and when he is old, he will not depart from it.
The first Christians were, by great hardships, trained up for glory.

Train

To be drilled in military exercises; to do duty in a military company.

Train

To prepare by exercise, diet, instruction, etc., for any physical contest; as, to train for a boat race.

Train

That which draws along; especially, persuasion, artifice, or enticement; allurement.

Train

Hence, something tied to a lure to entice a hawk; also, a trap for an animal; a snare.
With cunning trains him to entrap un wares.

Train

That which is drawn along in the rear of, or after, something; that which is in the hinder part or rear.

Train

That part of a gown which trails behind the wearer.

Train

A number of followers; a body of attendants; a retinue; a suite.
The king's daughter with a lovely train.
My train are men of choice and rarest parts.

Train

The after part of a gun carriage; the trail.

Train

A consecution or succession of connected things; a series.
The train of ills our love would draw behind it.
Rivers nowStream and perpetual draw their humid train.
Other truths require a train of ideas placed in order.

Train

The tail of a bird.

Train

Regular method; process; course; order; as, things now in a train for settlement.
If things were once in this train, . . . our duty would take root in our nature.

Train

The number of beats of a watch in any certain time.

Train

A line of gunpowder laid to lead fire to a charge, mine, or the like.

Train

A connected line of cars or carriages on a railroad; - called also railroad train.

Train

A heavy, long sleigh used in Canada for the transportation of merchandise, wood, and the like.

Train

A roll train; as, a 12-inch train.

Train

The aggregation of men, animals, and vehicles which accompany an army or one of its subdivisions, and transport its baggage, ammunition, supplies, and reserve materials of all kinds.

Train

Public transport provided by a line of railway cars coupled together and drawn by a locomotive;
Express trains don't stop at Princeton Junction

Train

A sequentially ordered set of things or events or ideas in which each successive member is related to the preceding;
A string of islands
Train of mourners
A train of thought

Train

A procession (of wagons or mules or camels) traveling together in single file;
We were part of a caravan of almost a thousand camels
They joined the wagon train for safety

Train

A series of consequences wrought by an event;
It led to a train of disasters

Train

Piece of cloth forming the long back section of a gown that is drawn along the floor;
The bride's train was carried by her two young nephews

Train

Wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed;
The fool got his tie caught in the geartrain

Train

Create by training and teaching;
The old master is training world-class violinists
We develop the leaders for the future

Train

Undergo training or instruction in preparation for a particular role, function, or profession;
She is training to be a teacher
He trained as a legal aid

Train

Train by instruction and practice; especially to teach self-control;
Parents must discipline their children
Is this dog trained?

Train

Prepare (someone) for a future role or function;
He is grooming his son to become his successor
The prince was prepared to become King one day
They trained him to be a warrior

Train

Train to be discriminative in taste or judgment;
Cultivate your musical taste
Train your tastebuds
She is well schooled in poetry

Train

Aim or direct at; as of blows, weapons, or objects such as photographic equipment;
Please don't aim at your little brother!
He trained his gun on the burglar
Don't train your camera on the women
Take a swipe at one's opponent

Train

Teach and supervise (someone); act as a trainer or coach (to), as in sports;
He is training our Olympic team
She is coaching the crew

Train

Exercise in order to prepare for an event or competition;
She is training for the Olympics

Train

Train to grow in a certain way by tying and pruning it;
Train the vine

Train

Travel by rail or train;
They railed from Rome to Venice
She trained to Hamburg

Train

Drag loosely along a surface; allow to sweep the ground;
The toddler was trailing his pants
She trained her long scarf behind her

Common Curiosities

How are trains classified?

Trains are classified based on their use, such as commuter, freight, or high-speed trains.

What is the primary function of a train?

A train's primary function is to transport passengers or cargo along rail tracks.

What role does a locomotive play in a train's operation?

A locomotive powers the train, pulling or pushing the carriages along the track.

Do all locomotives carry passengers?

No, locomotives generally do not carry passengers; they are designed to provide power.

What advantages do electric locomotives have over diesel ones?

Electric locomotives are more energy-efficient and often have lower emissions than diesel ones.

What makes a locomotive essential for train operations?

Locomotives provide the necessary power for trains to move, especially in non-electrified rail systems.

What are the main types of locomotives?

The main types are steam, diesel, and electric locomotives.

What is the difference between a metro and a train?

A metro is a type of train specifically designed for urban public transportation, often without a separate locomotive.

Can a train operate without a locomotive?

Some train systems, like subways or certain trams, do not require separate locomotives as each car is motorized.

What is a high-speed train?

A high-speed train is designed to operate significantly faster than traditional trains, often on dedicated tracks.

How does a steam locomotive work?

A steam locomotive operates by burning fuel, usually coal, to heat water in a boiler, creating steam that drives the engine.

What is a freight train?

A freight train is a type of train that carries goods instead of passengers.

How does train transport compare to other modes?

Train transport is often more environmentally friendly and can be more efficient for mass transit and bulk cargo.

Can locomotives be used for purposes other than pulling trains?

While primarily designed to pull trains, locomotives sometimes perform yard tasks like shunting.

Are all trains electric?

No, trains can be powered by diesel, electricity, or even steam, depending on the system.

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Author Spotlight

Written by
Maham Liaqat
Co-written by
Urooj Arif
Urooj is a skilled content writer at Ask Difference, known for her exceptional ability to simplify complex topics into engaging and informative content. With a passion for research and a flair for clear, concise writing, she consistently delivers articles that resonate with our diverse audience.

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