extremity vs flipper

extremity

noun
  • A limb (“major appendage of a human or animal such as an arm, leg, or wing”). 

  • The most extreme or furthest point of something. 

  • A hand or foot. 

  • An extreme measure. 

flipper

noun
  • In marine mammals such as whales, a wide flat limb, adapted for swimming. 

  • Television remote control, clicker. 

  • A type of ball bowled by a leg spin bowler, which spins backwards and skids off the pitch with a low bounce. 

  • A flat lever in a pinball machine, triggered by the player to strike the ball and keep it in play. 

  • A kind of false tooth, usually temporary. 

  • A small flat used to support a larger one. 

  • Someone who flips, in the sense of buying a house or other asset and selling it quickly for profit. 

  • Someone who flips in any other sense, for example throwing a coin. 

  • A flat, wide, paddle-like rubber covering for the foot, used in swimming. 

  • A kitchen spatula. 

verb
  • To lift one or both flippers out of the water and slap the surface of the water. 

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