relic vs remains

relic and remains both are nouns.

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

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

Other hyponyms of relic include archeological remains.

relic (noun)	remains (noun)
an antiquity that has survived from the distant past	the dead body of a human being
something of sentimental value	any object that is left unused or still extant
	a relic that has been excavated from the soil