licence vs certify

licence is a noun but certify is not a noun.

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

As verbs, licence and certify are synonyms defined as:

Other synonyms of licence include license.

licence (noun)	certify (noun)
a legal document giving official permission to do something
freedom to deviate deliberately from normally applicable rules or practices (especially in behavior or speech)
excessive freedom; lack of due restraint

licence (verb)	certify (verb)
authorize officially	provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes
	declare legally insane
	guarantee payment on; of checks
	guarantee as meeting a certain standard
	authorize officially