antiquity vs relic

antiquity and relic both are nouns.

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

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

Other hyponyms of antiquity include antique, Roman building, stela, stele.

antiquity (noun)	relic (noun)
an artifact surviving from the past	an antiquity that has survived from the distant past
extreme oldness	something of sentimental value
the historic period preceding the Middle Ages in Europe