expiration vs rollover

expiration

noun
  • Emission of volatile matter; exhalation. 

  • That which is produced by breathing out, as a sound. 

  • A cessation, extinction, ending 

  • The last emission of breath; death. 

  • The act of expiring. 

  • The act or process of breathing out, or forcing air from the lungs through the nose or mouth 

rollover

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

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

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

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