pancake vs rollover

pancake

noun
  • A defensive play in which the ball bounces off the top of a hand that has been pressed flat against the floor. 

  • A box on which an actor stands to make them appear taller. 

  • In the US (and e.g. Scotland), a leavened, thicker, fluffier cake. 

  • A kind of makeup, consisting of a thick layer of a compressed powder. 

  • In England, an often unleavened cake similar to a crepe. 

  • Composite leather made of scraps, glue and board, by extension of (4), material originally used for insoles, but later used also for heels and even soles. 

  • Anything very thin and flat. 

  • A type of throw, usually with a ring where the prop is thrown in such a way that it rotates round an axis of the diameter of the prop. 

verb
  • To flatten violently. 

  • To collapse one floor after another. 

  • To make a pancake landing. 

rollover

noun
  • A target on the pinball table that is activated when the ball rolls over it. 

  • A graphic element that changes its appearance when the cursor moves over it. 

  • A road traffic accident in which a vehicle overturns. 

  • In the National or European lottery, the situation in which a jackpot that has not been won is carried over to the next week. 

  • The reinvestment of funds in a new issue of the same or similar investment. 

  • The process of incrementing, especially back to an initial value. 

  • A keyboard feature where each key is scanned independently, so that multiple simultaneous keypresses always register correctly. 

  • A fee paid by a borrower in order to defer full repayment of a loan. 

  • The sudden ignition of flammable gasses (produced by pyrolysis in an oxygen-poor environment) near the ceiling of a room or other enclosed space. 

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