craftsperson vs machinist

craftsperson

noun
  • A person who produces arts and crafts. 

  • Someone who is highly skilled at their trade; an artificer. 

machinist

noun
  • One skilled in the use of machine tools for fashioning metal parts or tools out of metal. 

  • A constructor of machines and engines; one versed in the principles of machines. 

  • A person who operates machinery. 

  • A person employed to shift scenery in a theater. 

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