writer vs Christie

writer and Christie both are nouns.

Word	Noun	Adjective	Verb	Adverb
writer	Yes	No	No	No
Christie	Yes	No	No	No

writer (noun)	Christie (noun)
writes (books or stories or articles or the like) professionally (for pay)	prolific English writer of detective stories (1890-1976)
a person who is able to write and has written something