corroborate vs validate

corroborate and validate both are verbs.

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

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

Other hyponyms of corroborate include back, back up, vouch, verify, demonstrate, establish, prove, shew, show, document.

As verbs, corroborate and validate are synonyms defined as:

corroborate (verb)	validate (verb)
establish or strengthen as with new evidence or facts	make valid or confirm the validity of
give evidence for	prove valid; show or confirm the validity of something
support with evidence or authority or make more certain or confirm	give evidence for
	declare or make legally valid