trolley car vs tram

trolley car and tram both are nouns.

Word	Noun	Adjective	Verb	Adverb
trolley car	Yes	No	No	No
tram	Yes	No	Yes	No

As nouns, trolley car and tram are synonyms defined as:

trolley car and tram: a wheeled vehicle that runs on rails and is propelled by electricity

Other synonyms of trolley car include streetcar, tramcar, trolley.

trolley car (noun)	tram (noun)
a wheeled vehicle that runs on rails and is propelled by electricity	a four-wheeled wagon that runs on tracks in a mine
	a wheeled vehicle that runs on rails and is propelled by electricity
	a conveyance that transports passengers or freight in carriers suspended from cables and supported by a series of towers

trolley car (verb)	tram (verb)
	travel by tram