confidential vs confidentiality

confidential is not a noun while confidentiality is a noun.

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

confidential (noun)	confidentiality (noun)
	discretion in keeping secret information
	the state of being secret

confidential (adjective)	confidentiality (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