What is another word for subway?
Pronunciation: [sˈʌbwe͡ɪ] (IPA) 
The word "subway" refers to an underground railway system used for public transportation. However, there are several synonyms used to describe this form of transport, including "metro," "tube," "underground," "rapid transit," and "subterranean railway." In the United Kingdom, "London Underground" or simply "the tube" is a commonly used term, while in New York City, the subway system is referred to as simply "the subway." Other synonyms for subway include "mass transit," "underground railroad," and "metro system." Regardless of the terminology used, all these synonyms refer to a convenient and efficient way to travel in urban areas with heavy traffic volume.
