notarize vs attest

notarize and attest both are verbs.

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

As verbs, attest is a hypernym of notarize; that is, attest is a word with a broader meaning than notarize:

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

Other hypernyms of notarize include certify, demonstrate, evidence, manifest.

notarize (verb)	attest (verb)
authenticate as a notary	authenticate, affirm to be true, genuine, or correct, as in an official capacity
	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