rollover vs smashup

rollover

noun
  • A road traffic accident in which a vehicle overturns. 

  • 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. 

  • 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. 

smashup

noun
  • A violent collision involving one or more vehicles. 

  • An instance or the result of smashing; that which has been smashed into pieces. 

  • An abrupt, damaging breakdown or failure. 

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