crosscheck vs substantiation

crosscheck and substantiation both are nouns.

Word	Noun	Adjective	Verb	Adverb
crosscheck	Yes	No	No	No
substantiation	Yes	No	No	No

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

crosscheck: an instance of confirming something by considering information from several sources
substantiation: additional proof that something that was believed (some fact or hypothesis or theory) is correct

Other hypernyms of crosscheck include check, confirmation, verification.

crosscheck (noun)	substantiation (noun)
an illegal check (chopping at an opponent's arms or stick)	the act of validating; finding or testing the truth of something
an instance of confirming something by considering information from several sources	additional proof that something that was believed (some fact or hypothesis or theory) is correct