roof vs thatch

roof and thatch both are nouns.

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

As nouns, thatch is a hyponym of roof; that is, thatch is a word with a more specific, narrower meaning than roof:

As verbs, thatch is a hyponym of roof; that is, thatch is a word with a more specific, narrower meaning than roof:

Other hyponyms of roof include shingle, slate.

roof (noun)	thatch (noun)
a protective covering that covers or forms the top of a building	a house roof made with a plant material (as straw)
protective covering on top of a motor vehicle	hair resembling thatched roofing material
an upper limit on what is allowed	plant stalks used as roofing material
the inner top surface of a covered area or hollow space

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