authorize vs validate

authorize and validate both are verbs.

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

As verbs, validate is a hyponym of authorize; that is, validate is a word with a more specific, narrower meaning than authorize:

authorize (verb)	validate (verb)
grant authorization or clearance for	make valid or confirm the validity of
give or delegate power or authority to	prove valid; show or confirm the validity of something
	give evidence for
	declare or make legally valid