Margaret Mitchell vs writer

Margaret Mitchell and writer both are nouns.

Word	Noun	Adjective	Verb	Adverb
Margaret Mitchell	Yes	No	No	No
writer	Yes	No	No	No

Margaret Mitchell (noun)	writer (noun)
United States writer noted for her novel about the South during the American Civil War (1900-1949)	writes (books or stories or articles or the like) professionally (for pay)
	a person who is able to write and has written something