Craftsman vs master builder

Craftsman

noun
  • A building built in the Craftsman architectural style 

adj
  • Of an architectural style prominent in the United States in the early 20th century. 

master builder

noun
  • A person who is adept at overseeing the construction a building using the plans drawn by an architect 

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