bobcat vs mouser

bobcat

noun
  • A North American wildcat, Lynx rufus, having tufted ears and a short tail. 

  • A multi-purpose construction vehicle, akin to a smaller version of a front-end loader or a backhoe (backhoe loader), with a one-man caged control cabin. 

mouser

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

  • A moustache. 

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