confidentiality vs concealment

confidentiality and concealment both are nouns.

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

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

Other hypernyms of confidentiality include privacy, privateness, secrecy.

confidentiality (noun)	concealment (noun)
discretion in keeping secret information	the activity of keeping something secret
the state of being secret	a covering that serves to conceal or shelter something
	the condition of being concealed or hidden