registered vs creature

registered is not a noun while creature is a noun.

Word	Noun	Adjective	Verb	Adverb
registered	No	Yes	No	No
creature	Yes	No	No	No

registered (noun)	creature (noun)
	a living organism characterized by voluntary movement
	a living being
	a person who is controlled by others and is used to perform unpleasant or dishonest tasks for someone else

registered (adjective)	creature (adjective)
listed or recorded officially
(of animals) officially recorded with or certified by a recognized breed association; especially in a stud book
(of a boat or vessel) furnished with necessary official documents specifying ownership etc