Railways are a form of transportation that have been around for centuries. The term railway can refer to several different components, including a METRO (5 letters), a LINE (4 letters), an EL (2 letters), a TRACK (5 letters), a SWITCHBACK (10 letters), a COG (3 letters), and a SCENIC (6 letters). A METRO is an underground railway system, while a LINE is a route of transportation. An EL is an elevated railway, and a TRACK is the physical infrastructure of a railway system. A SWITCHBACK is a type of railway TRACK that changes direction, and a COG is a type of railway that uses a toothed wheel to move along a TRACK. Finally, a SCENIC railway is a type of railway that is designed to provide passengers with a SCENIC view.