Sir Arthur Conan Doyle vs writer

Sir Arthur Conan Doyle and writer both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sir Arthur Conan Doyle	Yes	No	No	No
writer	Yes	No	No	No

Sir Arthur Conan Doyle (noun)	writer (noun)
British author who created Sherlock Holmes (1859-1930)	writes (books or stories or articles or the like) professionally (for pay)
	a person who is able to write and has written something