confidence vs confidential

confidence is a noun but confidential is not a noun.

Word	Noun	Adjective	Verb	Adverb
confidence	Yes	No	No	No
confidential	No	Yes	No	No

confidence (noun)	confidential (noun)
freedom from doubt; belief in yourself and your abilities
a secret that is confided or entrusted to another
a feeling of trust (in someone or something)
a state of confident hopefulness that events will be favorable
a trustful relationship

confidence (adjective)	confidential (adjective)
	the level of official classification for documents next above restricted and below secret; available only to persons authorized to see documents so classified
	denoting confidence or intimacy
	entrusted with private information and the confidence of another
	(of information) given in confidence or in secret