baton vs life preserver

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. 

life preserver

noun
  • A buoyant ring or vest intended to keep a person afloat. 

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