confirm vs prove

confirm and prove both are verbs.

Word	Noun	Adjective	Verb	Adverb
confirm	No	No	Yes	No
prove	No	No	Yes	No

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

confirm: establish or strengthen as with new evidence or facts
prove: establish the validity of something, as by an example, explanation or experiment

Other hyponyms of confirm include back, back up, vouch, verify, demonstrate, establish, shew, show, document, validate.

confirm (verb)	prove (verb)
make more firm	establish the validity of something, as by an example, explanation or experiment
establish or strengthen as with new evidence or facts	obtain probate of
strengthen or make more firm	prove formally; demonstrate by a mathematical, formal proof
administer the rite of confirmation to	provide evidence for
support a person for a position	take a trial impression of
	cause to puff up with a leaven
	increase in volume
	put to the test, as for its quality, or give experimental use to
	be shown or be found to be