writer vs Emile Gaboriau

writer and Emile Gaboriau both are nouns.

Word	Noun	Adjective	Verb	Adverb
writer	Yes	No	No	No
Emile Gaboriau	Yes	No	No	No

writer (noun)	Emile Gaboriau (noun)
writes (books or stories or articles or the like) professionally (for pay)	French writer considered by some to be a founder of the detective novel (1832-1873)
a person who is able to write and has written something