contradictory vs incompatible

contradictory is a noun but incompatible is not a noun.

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

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

contradictory (adjective)	incompatible (adjective)
of words or propositions so related that both cannot be true and both cannot be false	used especially of drugs or muscles that counteract or neutralize each other's effect
unable for both to exist or be true at the same time	not compatible
in disagreement	incapable of being used with or connected to other devices or components without modification
that confounds or contradicts or confuses	not suitable to your tastes or needs
	of words so related that one contrasts with the other
	used especially of solids or solutions; incapable of blending into a stable homogeneous mixture
	not in keeping with what is correct or proper
	not compatible with other facts
	not easy to combine harmoniously