backboard vs proper right

backboard

verb
  • To place (a patient) on a spine board. 

noun
  • A spine board. 

  • A board placed at the back of a cart, boat, etc. 

  • The port or larboard side of a ship 

  • The flat vertical surface to which the basket is attached. 

  • A flat vertical wall with the image of a tennis net drawn or painted on it, designed to practice hitting against such that the ball rebounds. 

proper right

noun
  • The direction which is to the right from an object's perspective, the direction 90 degrees clockwise from the front. 

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