trolley coach vs motorcoach

trolley coach and motorcoach both are nouns.

Word	Noun	Adjective	Verb	Adverb
trolley coach	Yes	No	No	No
motorcoach	Yes	No	No	No

As nouns, motorcoach is a hypernym of trolley coach; that is, motorcoach is a word with a broader meaning than trolley coach:

trolley coach: a passenger bus with an electric motor that draws power from overhead wires
motorcoach: a vehicle carrying many passengers; used for public transport

Other hypernyms of trolley coach include autobus, bus, charabanc, coach, double-decker, jitney, motorbus, omnibus, passenger vehicle.

trolley coach (noun)	motorcoach (noun)
a passenger bus with an electric motor that draws power from overhead wires	a vehicle carrying many passengers; used for public transport