contradictoriness vs contradictory

contradictoriness and contradictory both are nouns.

Word	Noun	Adjective	Verb	Adverb
contradictoriness	Yes	No	No	No
contradictory	Yes	Yes	No	No

contradictoriness (noun)	contradictory (noun)
the relation that exists when opposites cannot coexist	two propositions are contradictories if both cannot be true (or both cannot be false) at the same time

contradictoriness (adjective)	contradictory (adjective)
	of words or propositions so related that both cannot be true and both cannot be false
	unable for both to exist or be true at the same time
	in disagreement
	that confounds or contradicts or confuses