validate vs affirm

validate and affirm both are verbs.

Word	Noun	Adjective	Verb	Adverb
validate	No	No	Yes	No
affirm	No	No	Yes	No

As verbs, affirm is a hypernym of validate; that is, affirm is a word with a broader meaning than validate:

Other hypernyms of validate include confirm, corroborate, substantiate, support, sustain.

validate (verb)	affirm (verb)
make valid or confirm the validity of	establish or strengthen as with new evidence or facts
prove valid; show or confirm the validity of something	to declare or affirm solemnly and formally as true
give evidence for	say yes to
declare or make legally valid