Katherine Anne Porter vs writer

Katherine Anne Porter and writer both are nouns.

Word	Noun	Adjective	Verb	Adverb
Katherine Anne Porter	Yes	No	No	No
writer	Yes	No	No	No

Katherine Anne Porter (noun)	writer (noun)
United States writer of novels and short stories (1890-1980)	writes (books or stories or articles or the like) professionally (for pay)
	a person who is able to write and has written something