illegalise vs veto

illegalise is not a noun while veto is a noun.

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

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

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

illegalise (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)

illegalise (verb)	veto (verb)
declare illegal; outlaw	command against
	vote against; refuse to endorse; refuse to assent