disallow vs nix

disallow is not a noun while nix is a noun.

Word	Noun	Adjective	Verb	Adverb
disallow	No	No	Yes	No
nix	Yes	No	Yes	No

As verbs, disallow and nix are synonyms defined as:

Other synonyms of disallow include forbid, interdict, prohibit, proscribe, veto.

disallow (noun)	nix (noun)
	a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential

disallow (verb)	nix (verb)
command against	command against