recognise vs certify

recognise and certify both are verbs.

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

As verbs, certify is a hypernym of recognise; that is, certify is a word with a broader meaning than recognise:

Other hypernyms of recognise include licence, license.

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