S-Bahn

Etymology
Abbreviation of, from +  +.

Noun

 * 1)  A commuter rail/metro system (generally overground) serving a metropolitan area or A train in such systems (S-train)

Usage notes

 * S-Bahn (abbreviation of Stadt-Schnellbahn) is not to be confused with
 * , which is a tramway or light rail system with some parts built with subway standard but not fully converted to subway, in other European countries known as premetro, or
 * , which is a street running tramway mainly within a city-centre. (In densely populated areas one will have to take the S-Bahn to get to the next city, and then switch to the local Straßenbahn to arrive at one's final destination; note that some traffic regions do not use S-Bahnen, but have similar trains called, for example, or.