Frankenstein's monster vs fictitious character

Frankenstein's monster and fictitious character both are nouns.

Word	Noun	Adjective	Verb	Adverb
Frankenstein's monster	Yes	No	No	No
fictitious character	Yes	No	No	No

Frankenstein's monster (noun)	fictitious character (noun)
the monster created by Frankenstein in a gothic novel by Mary Wollstonecraft Shelley (the creator's name is commonly used to refer to his creation)	an imaginary person represented in a work of fiction (play or film or story)