butt hinge vs hinge

butt hinge and hinge both are nouns.

Word	Noun	Adjective	Verb	Adverb
butt hinge	Yes	No	No	No
hinge	Yes	No	Yes	No

As nouns, hinge is a hypernym of butt hinge; that is, hinge is a word with a broader meaning than butt hinge:

butt hinge: a hinge mortised flush into the edge of the door and jamb
hinge: a joint that holds two parts together so that one can swing relative to the other

Other hypernyms of butt hinge include flexible joint.

butt hinge (noun)	hinge (noun)
a hinge mortised flush into the edge of the door and jamb	a joint that holds two parts together so that one can swing relative to the other
	a circumstance upon which subsequent events depend

butt hinge (verb)	hinge (verb)
	attach with a hinge