jouster vs punching bag

jouster

noun
  • A person who jousts. 

  • A horse used as a mount when jousting. 

punching bag

noun
  • A person serving as an object of abuse. 

  • A tough bag, usually cylindrical, filled with air, sand, or other material, often suspended so that it swings freely, which is punched or kicked when practising sports such as boxing or martial arts. 

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