confidential vs confidence

confidential is not a noun while confidence is a noun.

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

confidential (noun)	confidence (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

confidential (adjective)	confidence (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