Erle Stanley Gardner vs writer

Erle Stanley Gardner and writer both are nouns.

Word	Noun	Adjective	Verb	Adverb
Erle Stanley Gardner	Yes	No	No	No
writer	Yes	No	No	No

Erle Stanley Gardner (noun)	writer (noun)
writer of detective novels featuring Perry Mason (1889-1970)	writes (books or stories or articles or the like) professionally (for pay)
	a person who is able to write and has written something