neb vs muzzle

neb and muzzle both are nouns.

Word	Noun	Adjective	Verb	Adverb
neb	Yes	No	No	No
muzzle	Yes	No	Yes	No

neb (noun)	muzzle (noun)
horny projecting mouth of a bird	forward projecting part of the head of certain animals; includes the jaws and nose
a long projecting or anterior elongation of an animal's head; especially the nose	restraint put into a person's mouth to prevent speaking or shouting
	the open circular discharging end of a gun
	a leather or wire restraint that fits over an animal's snout (especially a dog's nose and jaws) and prevents it from eating or biting

neb (verb)	muzzle (verb)
	tie a gag around someone's mouth in order to silence them
	prevent from speaking out
	fit with a muzzle