sanction vs certify

sanction is a noun but certify is not a noun.

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

sanction (noun)	certify (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

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