affirmative vs positive

affirmative and positive both are nouns.

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

affirmative (noun)	positive (noun)
a reply of affirmation	a film showing a photographic image whose tones correspond to those of the original subject
	the primary form of an adjective or adverb; denotes a quality without qualification, comparison, or relation to increase or diminution

affirmative (adjective)	positive (adjective)
affirming or giving assent	characterized by or displaying affirmation or acceptance or certainty etc.
expressing or manifesting praise or approval	indicating existence or presence of a suspected condition or pathogen
expecting the best	reckoned, situated or tending in the direction which naturally or arbitrarily is taken to indicate increase or progress or onward motion
	of or relating to positivism
	involving advantage or good
	persuaded of; very sure
	having a positive charge
	marked by excessive confidence
	formally laid down or imposed
	greater than zero
	impossible to deny or disprove