fictitious character vs Mother Goose

fictitious character and Mother Goose both are nouns.

Word	Noun	Adjective	Verb	Adverb
fictitious character	Yes	No	No	No
Mother Goose	Yes	No	No	No

fictitious character (noun)	Mother Goose (noun)
an imaginary person represented in a work of fiction (play or film or story)	the imaginary author of a collection of nursery rhymes