coach vs roof

coach and roof both are nouns.

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

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

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