bear witness vs attest

bear witness and attest both are verbs.

Word	Noun	Adjective	Verb	Adverb
bear witness	No	No	Yes	No
attest	No	No	Yes	No

As verbs, bear witness and attest are synonyms defined as:

Other synonyms of bear witness include take the stand, testify.

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

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

Other hyponyms of bear witness include certify, demonstrate, evidence, manifest, presume, abduce, adduce, cite.

bear witness (verb)	attest (verb)
give testimony in a court of law	authenticate, affirm to be true, genuine, or correct, as in an official capacity
provide evidence for	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