motorcoach vs passenger vehicle

motorcoach and passenger vehicle both are nouns.

Word	Noun	Adjective	Verb	Adverb
motorcoach	Yes	No	No	No
passenger vehicle	Yes	No	No	No

As nouns, motorcoach and passenger vehicle are synonyms defined as:

motorcoach and passenger vehicle: a vehicle carrying many passengers; used for public transport

Other synonyms of motorcoach include autobus, bus, charabanc, coach, double-decker, jitney, motorbus, omnibus.

motorcoach (noun)	passenger vehicle (noun)
a vehicle carrying many passengers; used for public transport	a vehicle carrying many passengers; used for public transport