tramline vs tramway

tramline and tramway both are nouns.

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

As nouns, tramline and tramway are synonyms defined as:

Other synonyms of tramline include streetcar track.

tramline (noun)	tramway (noun)
the track on which trams or streetcars run	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