contradictory vs confounding

contradictory is a noun but confounding is not a noun.

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

As adjectives, contradictory and confounding are synonyms defined as:

contradictory and confounding: that confounds or contradicts or confuses

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

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