certify vs recognise

certify and recognise both are verbs.

Word	Noun	Adjective	Verb	Adverb
certify	No	No	Yes	No
recognise	No	No	Yes	No

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

Other hyponyms of certify include franchise, charter, accredit, recognize.

certify (verb)	recognise (verb)
provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes	perceive to be the same
declare legally insane	be fully aware or cognizant of
guarantee payment on; of checks	accept (someone) to be what is claimed or accept his power and authority
guarantee as meeting a certain standard	express obligation, thanks, or gratitude for
authorize officially	express greetings upon meeting someone
	detect with the senses
	grant credentials to
	show approval or appreciation of