machinist vs smith

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. 

smith

noun
  • A craftsperson who works metal into desired forms using a hammer and other tools, sometimes heating the metal to make it more workable, especially a blacksmith. 

  • One who makes anything; wright. 

verb
  • To forge, to form, usually on an anvil; by heating and pounding. 

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