Cheshire cat vs fictitious character

Cheshire cat and fictitious character both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cheshire cat	Yes	No	No	No
fictitious character	Yes	No	No	No

Cheshire cat (noun)	fictitious character (noun)
a fictional cat with a broad fixed smile on its face; created by Lewis Carroll	an imaginary person represented in a work of fiction (play or film or story)