baton vs flying mouse

baton

noun
  • A staff or truncheon, used for various purposes. 

  • A short stout club used primarily by policemen; a truncheon (UK). 

  • An object transferred by runners in a relay race. 

  • The stick of a conductor in musical performances. 

  • A short vertical lightweight post, not set into the ground, used to separate wires in a fence. 

  • A bend with the ends cut off, resembling a baton, typically borne sinister, and often used as a mark of cadency, initially for both legitimate and illegitimate children, but later chiefly for illegitimate children, 

verb
  • To strike with a baton. 

flying mouse

noun
  • An input device like a mouse that can be lifted from a surface and moved in three dimensions. 

  • Any species of rodent in the genus Idiurus, native to parts of tropical Africa, which have the ability to glide. 

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