hip roof vs roof

hip roof and roof both are nouns.

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

As nouns, roof is a hypernym of hip roof; that is, roof is a word with a broader meaning than hip roof:

hip roof (noun)	roof (noun)
a roof having sloping ends as well as sloping sides	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

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