Subway vs. Underground — What's the Difference?

An underground urban railroad, usually operated by electricity.

Situated, occurring, or operating below the surface of the earth

A passage for such a railroad.

Hidden or concealed; clandestine

An underground tunnel or passage, as for a water main or for pedestrians.

Of or relating to an organization involved in secret or illegal activity

An underground railway, especially for mass transit of people in urban areas. Rail transportation

Of or relating to an avant-garde movement or its films, publications, and art, usually privately produced and of special appeal and often concerned with social or artistic experiment.

A train that runs on such an underground railway.

A clandestine, often nationalist, organization fostering or planning hostile activities against, or the overthrow of, a government in power, such as an occupying military government

A rapid transit system, regardless of the elevation of its right of way; a metro system.

Chiefly British A subway system.

(British) An underground walkway, tunnel for pedestrians (called pedestrian underpass in US).

An avant-garde movement or publication.

An underground route for pipes, sewers, etc.

Below the surface of the earth.

To travel by underground railway.

In secret; stealthily.

An underground way or gallery; especially, a passage under a street, in which water mains, gas mains, telegraph wires, etc., are conducted.

To situate under the ground

An underground railroad, usually having trains powered by electricity provided by an electric line running through the underground tunnel. It is usually confined to the center portion of cities; - called also tube, and in Britain, underground. In certain other countries (as in France or Russia) it is called the metro.

(not comparable) Below the ground; below the surface of the Earth.

Electric underground railway

(figurative) Hidden, furtive, secretive.

An underground tunnel or passage enabling pedestrians to cross a road or railway

Outside the mainstream, especially unofficial and hidden from the authorities.

Below the ground.

Secretly.

(geography) Regions beneath the surface of the earth, both natural (eg. caves) and man-made (eg. mines).

Syn of subway: a railway that is under the ground.

A movement or organisation of people who resist political convention.

A movement or organisation of people who resist artistic convention.

To route electricity distribution cables underground.

The place or space beneath the surface of the ground; subterranean space.

A subway or subway system, especially in the United Kingdom.

A secret organization opposed to the prevailing government; as, the French underground during the Nazi occupation.

A group or movement holding unorthodox views in an environment where conventional ideas dominate, as in artistic circles.

Being below the surface of the ground; as, an underground story or apartment.

Done or occurring out of sight; secret.

Beneath the surface of the earth.

A secret group organized to overthrow a government or occupation force

Electric underground railway

Under the level of the ground;

Conducted with or marked by hidden aims or methods;

Used of independent armed resistance forces;

In or into hiding or secret operation;

Beneath the surface of the earth;