axiomatic vs axiom

axiomatic is not a noun while axiom is a noun.

Word	Noun	Adjective	Verb	Adverb
axiomatic	No	Yes	No	No
axiom	Yes	No	No	No

axiomatic (noun)	axiom (noun)
	a saying that is widely accepted on its own merits
	(logic) a proposition that is not susceptible of proof or disproof; its truth is assumed to be self-evident

axiomatic (adjective)	axiom (adjective)
of or relating to or derived from axioms
containing aphorisms or maxims
evident without proof or argument