edifice vs roof

edifice and roof both are nouns.

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

edifice (noun)	roof (noun)
a structure that has a roof and walls and stands more or less permanently in one place	a protective covering that covers or forms the top of a building
	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

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