side bet vs tricast

side bet

noun
  • A bet on some aspect of a game or competition that is not the main bet of the game or the prize of the competition; proposition bet. 

  • An investment of time, money, or resources that reinforces one's commitment to a course of action. 

  • An investment or risk undertaken by a company that is not part of its core business. 

tricast

noun
  • A specific kind of horse race betting, made by choosing the first three horses home in the correct order. 

  • The simultaneous broadcasting of an audio via FM, web streaming and podcasting. Used in radio stations. 

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