take the stand vs vouch

take the stand and vouch both are verbs.

Word	Noun	Adjective	Verb	Adverb
take the stand	No	No	Yes	No
vouch	No	No	Yes	No

As verbs, vouch is a hyponym of take the stand; that is, vouch is a word with a more specific, narrower meaning than take the stand:

take the stand (verb)	vouch (verb)
give testimony in a court of law	give supporting evidence
	summon (a vouchee) into court to warrant or defend a title
	give personal assurance; guarantee
	give surety or assume responsibility