bear witness vs prove

bear witness and prove both are verbs.

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

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

Other synonyms of bear witness include evidence, show, testify.

bear witness (verb)	prove (verb)
give testimony in a court of law	establish the validity of something, as by an example, explanation or experiment
provide evidence for	obtain probate of
	prove formally; demonstrate by a mathematical, formal proof
	provide evidence for
	take a trial impression of
	cause to puff up with a leaven
	increase in volume
	put to the test, as for its quality, or give experimental use to
	be shown or be found to be