Philip Marlowe vs fictitious character

Philip Marlowe and fictitious character both are nouns.

Word	Noun	Adjective	Verb	Adverb
Philip Marlowe	Yes	No	No	No
fictitious character	Yes	No	No	No

Philip Marlowe (noun)	fictitious character (noun)
tough cynical detective (one of the early detective heroes in American fiction) created by Raymond Chandler	an imaginary person represented in a work of fiction (play or film or story)