corpse vs remains

corpse and remains both are nouns.

Word	Noun	Adjective	Verb	Adverb
corpse	Yes	No	No	No
remains	Yes	No	No	No

As nouns, corpse and remains are synonyms defined as:

Other synonyms of corpse include cadaver, clay, stiff.

corpse (noun)	remains (noun)
the dead body of a human being	the dead body of a human being
	any object that is left unused or still extant
	a relic that has been excavated from the soil