inconsistent vs contradictory

inconsistent is not a noun while contradictory is a noun.

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

inconsistent (noun)	contradictory (noun)
	two propositions are contradictories if both cannot be true (or both cannot be false) at the same time

inconsistent (adjective)	contradictory (adjective)
displaying a lack of consistency	of words or propositions so related that both cannot be true and both cannot be false
not in agreement	unable for both to exist or be true at the same time
not capable of being made consistent or harmonious	in disagreement
	that confounds or contradicts or confuses