roof vs motorcoach

roof and motorcoach both are nouns.

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

roof (noun)	motorcoach (noun)
a protective covering that covers or forms the top of a building	a vehicle carrying many passengers; used for public transport
protective covering on top of a motor vehicle
an upper limit on what is allowed
the inner top surface of a covered area or hollow space

roof (verb)	motorcoach (verb)
provide a building with a roof; cover a building with a roof