avowal vs affirmative

avowal and affirmative both are nouns.

Word	Noun	Adjective	Verb	Adverb
avowal	Yes	No	No	No
affirmative	Yes	Yes	No	No

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

Other hyponyms of avowal include reaffirmation, reassertion, professing, profession.

avowal (noun)	affirmative (noun)
a statement asserting the existence or the truth of something	a reply of affirmation

avowal (adjective)	affirmative (adjective)
	affirming or giving assent
	expressing or manifesting praise or approval
	expecting the best