author vs couturier

author

noun
  • Someone who writes books for a living. 

  • The originator or creator of a work, especially of a literary composition. 

verb
  • To create a work as its author. 

couturier

noun
  • A person who designs haute couture (high fashion). 

  • A company that is owned by or employs such a person; a fashion house. 

How often have the words author and couturier occurred in a corpus of books? (source: Google Ngram Viewer )