authoress vs writer

authoress and writer both are nouns.

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

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

authoress: a woman author
writer: writes (books or stories or articles or the like) professionally (for pay)

Other hypernyms of authoress include adult female, woman, author.

authoress (noun)	writer (noun)
a woman author	writes (books or stories or articles or the like) professionally (for pay)
	a person who is able to write and has written something