grownup vs creature

grownup and creature both are nouns.

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

grownup (noun)	creature (noun)
a fully developed person from maturity onward	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

grownup (adjective)	creature (adjective)
(of animals) fully developed