Little John vs fictitious character

Little John and fictitious character both are nouns.

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

Little John (noun)	fictitious character (noun)
legendary follower of Robin Hood; noted for his size and strength	an imaginary person represented in a work of fiction (play or film or story)