Philip Roth vs writer

Philip Roth and writer both are nouns.

Word	Noun	Adjective	Verb	Adverb
Philip Roth	Yes	No	No	No
writer	Yes	No	No	No

Philip Roth (noun)	writer (noun)
United States writer whose novels portray middle-class Jewish life (born in 1933)	writes (books or stories or articles or the like) professionally (for pay)
	a person who is able to write and has written something