litterateur vs writer

litterateur and writer both are nouns.

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

As nouns, writer is a hypernym of litterateur; that is, writer is a word with a broader meaning than litterateur:

litterateur: a writer of literary works
writer: writes (books or stories or articles or the like) professionally (for pay)

Other hypernyms of litterateur include author.

litterateur (noun)	writer (noun)
a writer of literary works	writes (books or stories or articles or the like) professionally (for pay)
	a person who is able to write and has written something