quitter vs apostate

quitter and apostate both are nouns.

Word	Noun	Adjective	Verb	Adverb
quitter	Yes	No	No	No
apostate	Yes	Yes	No	No

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

quitter: a person who gives up too easily
apostate: a disloyal person who betrays or deserts his cause or religion or political party or friend etc.

Other hyponyms of quitter include abdicator, dropout, deserter, ratter, recreant, renegade, turncoat.

quitter (noun)	apostate (noun)
a person who gives up too easily	a disloyal person who betrays or deserts his cause or religion or political party or friend etc.

quitter (adjective)	apostate (adjective)
	not faithful to religion or party or cause