rails vs tramway

rails and tramway both are nouns.

Word	Noun	Adjective	Verb	Adverb
rails	Yes	No	No	No
tramway	Yes	No	No	No

rails (noun)	tramway (noun)
a bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll	the track on which trams or streetcars run
	a conveyance that transports passengers or freight in carriers suspended from cables and supported by a series of towers