writer vs Sylvia Plath

writer and Sylvia Plath both are nouns.

Word	Noun	Adjective	Verb	Adverb
writer	Yes	No	No	No
Sylvia Plath	Yes	No	No	No

writer (noun)	Sylvia Plath (noun)
writes (books or stories or articles or the like) professionally (for pay)	United States writer and poet (1932-1963)
a person who is able to write and has written something