crested vs animal

crested is not a noun while animal is a noun.

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

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

crested (adjective)	animal (adjective)
(of a knight's helmet) having a decorative plume	marked by the appetites and passions of the body
(of a bird or animal) having a usually ornamental tuft or process on the head; often used in combination
bearing an heraldic device