animal vs unregistered

animal is a noun but unregistered is not a noun.

Word	Noun	Adjective	Verb	Adverb
animal	Yes	Yes	No	No
unregistered	No	Yes	No	No

animal (noun)	unregistered (noun)
a living organism characterized by voluntary movement

animal (adjective)	unregistered (adjective)
marked by the appetites and passions of the body	not registered
	(of animals) not recorded with or certified by an official breed association
	(a boat or vessel) not furnished with official documents