Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
subway
Grammar usage guide and real-world examplesUSAGE SUMMARY
The word "subway" is correct and usable in written English.
You can use it to refer to a form of transportation such as an underground rail system or a type of sandwich. For example: "I took the subway to work this morning."
✓ Grammatically correct
News & Media
Film
Travel
Alternative expressions(4)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
We walked together every day after school to the Carroll Street subway station in south Brooklyn.
News & Media
If he had Down's syndrome and he accidently pushed someone off a subway, that would be different… I've seen things where people are like, 'Adria didn't know what she was doing by tweeting it.' Yes, I did".
News & Media
Outside rush hour, the subway is eerily silent: thanks to a strong underground signal, everyone's staring at their smartphones, texting, playing games, or reading.
News & Media
Or the battle to get on a New York subway car during rush hour.
News & Media
I waved a cheery hello to a man who looked suspiciously like Tony Bennett and stumbled out into the humid Manhattan night, wondering how the hell I was going to find the 7 subway back to Queens.
News & Media
Only after a fortnight did it strike me: not once did I hear a single person actually speaking into their phone on the Tokyo subway.
News & Media
The Meltdown artists who reached New York in the 70s all share certain memories: the infernal rattling of the graffiti-smeared subway cars, the rent-paying jobs in dive bars and X-rated movie theatres, the hunt for cheap accommodation in parts of town where even cab drivers feared to venture, the culture shock of entering a rotting, neurotic metropolis.
News & Media
It was everything I could have dreamed New York would have been – yellow cabs, people coming out of the subway, the big lights of Broadway and the seedy characters hanging around drinking beer out of brown paper bags.
News & Media
I was used to travelling on the underground but nothing prepared me for the New York subway.
News & Media
Like the original version of Total Recall having videos on the subway!
News & Media
Prestigious public art commissions came her way: for instance, the lavish, glittering mosaic murals that since 2001 have adorned the subway station under New York's Lincoln Center.
News & Media
Expert writing Tips
Best practice
When describing a subway system, specify the city or region if it's not clear from the context (e.g., "the New York subway", "the Tokyo subway") to avoid ambiguity.
Common error
Avoid using "subway" interchangeably with other forms of public transport like trams or light rail. "Subway" specifically refers to an underground rail system.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The word "subway" primarily functions as a noun, denoting an underground railway system, particularly for mass transit. According to Ludwig, the term is widely recognized and used correctly. The examples provided confirm this usage, showcasing its role in describing urban transportation networks.
Frequent in
News & Media
48%
Film
14%
Travel
10%
Less common in
Formal & Business
8%
Arts
6%
Science
4%
Ludwig's WRAP-UP
The term "subway" is a common and correct noun referring to an underground railway system used for mass transit. As highlighted by Ludwig, it is grammatically sound and widely used across diverse contexts, especially in news and media. While alternatives like "underground railway" or "metro system" exist, "subway" remains a prevalent term, particularly in American English. Remember to specify the location when necessary to avoid ambiguity. Avoiding interchangeable use with other transit systems will keep your writing clear and precise.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
underground railway
Emphasizes the underground aspect and the rail transport nature.
metro system
A more general term for an urban rapid transit system.
underground train
Highlights the train aspect that runs underground.
tube
A common colloquial term, especially in London, for a subway.
rapid transit
Focuses on the speed and efficiency of the transport system.
mass transit system
Highlights the ability to transport large numbers of people.
underground transportation
A broader term encompassing any form of transportation beneath the surface.
subterranean train network
More descriptive, emphasizing the network aspect and its location underground.
urban rail transit
Focuses on the urban setting and the rail-based nature.
underground passage
Emphasizes the physical structure allowing passage underneath.
FAQs
How is the term "subway" used in a sentence?
The term "subway" is commonly used as a noun to refer to an underground train system. For example: "I take the subway to work every day", or "The subway station is just around the corner".
What are some alternative terms I can use instead of "subway"?
You can use alternatives like "underground railway", "metro system", or "rapid transit" depending on the context.
What is the difference between a "subway" and an underpass?
A "subway" is primarily a rapid transit system, while an underpass is a pedestrian walkway or tunnel beneath a road or railway. The main difference lies in their purpose: one is for transport, the other for pedestrian passage.
Is there a difference between "subway" and "tube"?
The terms "subway" and "tube" are generally interchangeable, but "tube" is more commonly used in British English, specifically to refer to the London Underground. "Subway" is the more common term in American English.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested