farm cat vs mouser

farm cat

noun
  • A domestic cat, usually of a mixed breed, that lives primarily outdoors, in a feral or semiferal condition on agricultural properties. 

mouser

noun
  • A cat that catches mice, kept specifically for the purpose. 

  • A moustache. 

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