fictitious character vs Robinson Crusoe

fictitious character and Robinson Crusoe both are nouns.

Word	Noun	Adjective	Verb	Adverb
fictitious character	Yes	No	No	No
Robinson Crusoe	Yes	No	No	No

fictitious character (noun)	Robinson Crusoe (noun)
an imaginary person represented in a work of fiction (play or film or story)	the hero of Daniel Defoe's novel about a shipwrecked English sailor who survives on a small tropical island