cultivator vs stockbreeder

cultivator

noun
  • A person who cultivates. 

  • Any of several devices used to loosen or stir the soil, either to remove weeds or to provide aeration and drainage. 

stockbreeder

noun
  • A person who breeds and raises livestock. 

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