certify vs sanction

certify is not a noun while sanction is a noun.

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

certify (noun)	sanction (noun)
	the act of final authorization
	a mechanism of social control for enforcing a society's standards
	official permission or approval
	formal and explicit approval

certify (verb)	sanction (verb)
provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes	give sanction to
declare legally insane	give religious sanction to, such as through an oath
guarantee payment on; of checks	give authority or permission to
guarantee as meeting a certain standard
authorize officially