validation vs cogent evidence

validation and cogent evidence both are nouns.

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

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

validation: the cognitive process of establishing a valid proof
cogent evidence: any factual evidence that helps to establish the truth of something

Other hypernyms of validation include proof.

validation (noun)	cogent evidence (noun)
the act of validating; finding or testing the truth of something	any factual evidence that helps to establish the truth of something
the cognitive process of establishing a valid proof