verification vs cogent evidence

verification and cogent evidence both are nouns.

Word	Noun	Adjective	Verb	Adverb
verification	Yes	No	No	No
cogent evidence	Yes	No	No	No

As nouns, cogent evidence is a hypernym of verification; that is, cogent evidence is a word with a broader meaning than verification:

verification: additional proof that something that was believed (some fact or hypothesis or theory) is correct
cogent evidence: any factual evidence that helps to establish the truth of something

Other hypernyms of verification include proof.

verification (noun)	cogent evidence (noun)
additional proof that something that was believed (some fact or hypothesis or theory) is correct	any factual evidence that helps to establish the truth of something
(law) an affidavit attached to a statement confirming the truth of that statement