auteur vs draughtsman

auteur

noun
  • A creative artist, especially a film director, seen as having a specific, recognisable artistic vision, and who is seen as the single or preeminent ‘author’ of his works. 

draughtsman

noun
  • A person skilled at drawing engineering or architectural plans. 

  • A piece in the game of draughts (checkers). 

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