writer vs Evelyn Arthur Saint John Waugh

writer and Evelyn Arthur Saint John Waugh both are nouns.

Word	Noun	Adjective	Verb	Adverb
writer	Yes	No	No	No
Evelyn Arthur Saint John Waugh	Yes	No	No	No

writer (noun)	Evelyn Arthur Saint John Waugh (noun)
writes (books or stories or articles or the like) professionally (for pay)	English author of satirical novels (1903-1966)
a person who is able to write and has written something