quitter vs turncoat

quitter and turncoat both are nouns.

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

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

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

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

quitter (noun)	turncoat (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.