certify vs notarize

certify and notarize both are verbs.

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

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

certify: provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes
notarize: authenticate as a notary

Other hyponyms of certify include authenticate, reflect, reflect, notarise, condemn.

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