evidence vs attestation

evidence and attestation both are nouns.

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

As nouns, attestation is a hyponym of evidence; that is, attestation is a word with a more specific, narrower meaning than evidence:

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

evidence (verb)	attestation (verb)
provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes
provide evidence for
give evidence