beast vs half-bred

beast is a noun but half-bred is not a noun.

Word	Noun	Adjective	Verb	Adverb
beast	Yes	No	No	No
half-bred	No	Yes	No	No

beast (noun)	half-bred (noun)
a living organism characterized by voluntary movement
a cruelly rapacious person

beast (adjective)	half-bred (adjective)
	(of animals) having only one purebred parent