confidentiality vs discreetness

confidentiality and discreetness both are nouns.

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

As nouns, discreetness is a hypernym of confidentiality; that is, discreetness is a word with a broader meaning than confidentiality:

Other hypernyms of confidentiality include circumspection, discretion, prudence.

confidentiality (noun)	discreetness (noun)
discretion in keeping secret information	subtly skillful handling of a situation
the state of being secret	knowing how to avoid embarrassment or distress