attest vs notarize

attest and notarize both are verbs.

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

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

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

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

attest (verb)	notarize (verb)
authenticate, affirm to be true, genuine, or correct, as in an official capacity	authenticate as a notary
provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes
give testimony in a court of law
establish or verify the usage of