vouch vs summons

vouch is not a noun while summons is a noun.

Word	Noun	Adjective	Verb	Adverb
vouch	No	No	Yes	No
summons	Yes	No	Yes	No

As verbs, summons is a hypernym of vouch; that is, summons is a word with a broader meaning than vouch:

Other hypernyms of vouch include cite, summon.

vouch (noun)	summons (noun)
	a writ issued by authority of law; usually compels the defendant's attendance in a civil suit; failure to appear results in a default judgment against the defendant
	a request to be present
	an order to appear in person at a given place and time

vouch (verb)	summons (verb)
give supporting evidence	call in an official matter, such as to attend court
summon (a vouchee) into court to warrant or defend a title
give personal assurance; guarantee
give surety or assume responsibility