confirm vs establish

confirm and establish both are verbs.

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

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

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

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

confirm (verb)	establish (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	institute, enact, or establish
strengthen or make more firm	use as a basis for; found on
administer the rite of confirmation to	place
support a person for a position	set up or lay the groundwork for
	bring about
	build or establish something abstract
	set up or found