passenger vehicle vs motorcoach

passenger vehicle and motorcoach both are nouns.

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

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

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

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

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