parity check vs substantiation

parity check and substantiation both are nouns.

Word	Noun	Adjective	Verb	Adverb
parity check	Yes	No	No	No
substantiation	Yes	No	No	No

As nouns, substantiation is a hypernym of parity check; that is, substantiation is a word with a broader meaning than parity check:

parity check: a system of checking for errors in computer functioning
substantiation: additional proof that something that was believed (some fact or hypothesis or theory) is correct

Other hypernyms of parity check include check, confirmation, verification.

parity check (noun)	substantiation (noun)
a system of checking for errors in computer functioning	the act of validating; finding or testing the truth of something
	additional proof that something that was believed (some fact or hypothesis or theory) is correct