debar vs veto

debar is not a noun while veto is a noun.

Word	Noun	Adjective	Verb	Adverb
debar	No	No	Yes	No
veto	Yes	No	Yes	No

As verbs, veto is a hypernym of debar; that is, veto is a word with a broader meaning than debar:

Other hypernyms of debar include disallow, forbid, interdict, nix, prohibit, proscribe.

debar (noun)	veto (noun)
	a vote that blocks a decision
	the power or right to prohibit or reject a proposed or intended act (especially the power of a chief executive to reject a bill passed by the legislature)

debar (verb)	veto (verb)
prevent from entering; keep out	command against
prevent the occurrence of; prevent from happening; to protect from or to keep away anything undesirable; to ward off	vote against; refuse to endorse; refuse to assent
bar temporarily; from school, office, etc.