fictitious character vs Chicken Little

fictitious character and Chicken Little both are nouns.

Word	Noun	Adjective	Verb	Adverb
fictitious character	Yes	No	No	No
Chicken Little	Yes	No	No	No

fictitious character (noun)	Chicken Little (noun)
an imaginary person represented in a work of fiction (play or film or story)	a fictional character who was hit on the head with an acorn and believed that the sky was falling