carcase vs dead body

carcase and dead body both are nouns.

Word	Noun	Adjective	Verb	Adverb
carcase	Yes	No	No	No
dead body	Yes	No	No	No

As nouns, dead body is a hypernym of carcase; that is, dead body is a word with a broader meaning than carcase:

carcase: the dead body of an animal especially one slaughtered and dressed for food
dead body: a natural object consisting of a dead animal or person

Other hypernyms of carcase include body.

carcase (noun)	dead body (noun)
the dead body of an animal especially one slaughtered and dressed for food	a natural object consisting of a dead animal or person