endorse vs visa

endorse is not a noun while visa is a noun.

Word	Noun	Adjective	Verb	Adverb
endorse	No	No	Yes	No
visa	Yes	No	Yes	No

As verbs, visa is a hyponym of endorse; that is, visa is a word with a more specific, narrower meaning than endorse:

Other hyponyms of endorse include co-sign, cosign.

endorse (noun)	visa (noun)
	an endorsement made in a passport that allows the bearer to enter the country issuing it

endorse (verb)	visa (verb)
sign as evidence of legal transfer	provide (a passport) with a visa
be behind; approve of	approve officially
guarantee as meeting a certain standard
give support or one's approval to