attest vs evidence

attest is not a noun while evidence is a noun.

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

As verbs, attest and evidence are synonyms defined as:

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

Other synonyms of attest include certify, demonstrate, manifest.

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

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

Other hypernyms of attest include bear witness, prove, show, testify.

attest (noun)	evidence (noun)
	your basis for belief or disbelief; knowledge on which to base belief
	(law) all the means by which any alleged matter of fact whose truth is investigated at judicial trial is established or disproved
	an indication that makes something evident

attest (verb)	evidence (verb)
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
provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes	provide evidence for
give testimony in a court of law	give evidence
establish or verify the usage of