bus vs motorcoach

bus and motorcoach both are nouns.

Word	Noun	Adjective	Verb	Adverb
bus	Yes	No	Yes	No
motorcoach	Yes	No	No	No

As nouns, bus and motorcoach are synonyms defined as:

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

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

bus (noun)	motorcoach (noun)
a vehicle carrying many passengers; used for public transport	a vehicle carrying many passengers; used for public transport
a car that is old and unreliable
an electrical conductor that makes a common connection between several circuits
the topology of a network whose components are connected by a busbar

bus (verb)	motorcoach (verb)
remove used dishes from the table in restaurants
ride in a bus
send or move around by bus