roof vs coach

roof and coach both are nouns.

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

roof (noun)	coach (noun)
a protective covering that covers or forms the top of a building	a carriage pulled by four horses with one driver
protective covering on top of a motor vehicle	a railcar where passengers ride
an upper limit on what is allowed	a vehicle carrying many passengers; used for public transport
the inner top surface of a covered area or hollow space	a person who gives private instruction (as in singing, acting, etc.)
	(sports) someone in charge of training an athlete or a team

roof (verb)	coach (verb)
provide a building with a roof; cover a building with a roof	teach and supervise (someone); act as a trainer or coach (to), as in sports
	drive or operate a coach or carriage