positivism vs positivistic

positivism is a noun but positivistic is not a noun.

Word	Noun	Adjective	Verb	Adverb
positivism	Yes	No	No	No
positivistic	No	Yes	No	No

positivism (noun)	positivistic (noun)
a quality or state characterized by certainty or acceptance or affirmation and dogmatic assertiveness
the form of empiricism that bases all knowledge on perceptual experience (not on intuition or revelation)

positivism (adjective)	positivistic (adjective)
	of or relating to positivism