outlaw vs forbid

outlaw is a noun but forbid is not a noun.

Word	Noun	Adjective	Verb	Adverb
outlaw	Yes	Yes	Yes	No
forbid	No	No	Yes	No

As verbs, forbid is a hypernym of outlaw; that is, forbid is a word with a broader meaning than outlaw:

Other hypernyms of outlaw include disallow, interdict, nix, prohibit, proscribe, veto.

outlaw (noun)	forbid (noun)
someone who has committed a crime or has been legally convicted of a crime

outlaw (adjective)	forbid (adjective)
contrary to or forbidden by law
disobedient to or defiant of law

outlaw (verb)	forbid (verb)
declare illegal; outlaw	command against
	keep from happening or arising; make impossible