A. A. Milne vs writer

A. A. Milne and writer both are nouns.

Word	Noun	Adjective	Verb	Adverb
A. A. Milne	Yes	No	No	No
writer	Yes	No	No	No

A. A. Milne (noun)	writer (noun)
English writer of stories for children (1882-1956)	writes (books or stories or articles or the like) professionally (for pay)
	a person who is able to write and has written something