abort vs backfire

abort

verb
  • To stop or fail at something in the preliminary stages. 

  • To cause a premature termination of (a fetus); to end a pregnancy before term. 

  • To abandon a mission at any point after the beginning of the mission and prior to its completion. 

  • To terminate a mission involving a missile or rocket; to destroy a missile or rocket prematurely. 

  • To end prematurely; to stop in the preliminary stages; to turn back. 

  • To miscarry; to bring forth (non-living) offspring prematurely. 

  • To become checked in normal development, so as either to remain rudimentary or shrink away wholly; to cease organic growth before maturation; to become sterile. 

  • To terminate a process prior to completion. 

  • To cause an organism to develop minimally; to cause rudimentary development to happen; to prevent maturation. 

noun
  • The function used to abort a process. 

  • An early termination of a mission, action, or procedure in relation to missiles or spacecraft; the craft making such a mission. 

  • An event in which a process is aborted. 

backfire

verb
  • To fail in a manner that brings down further misfortune. 

  • To fire in the opposite direction, for example due to an obstruction in the barrel. 

  • To experience a premature ignition of fuel or an ignition of exhaust gases, making a popping sound. 

noun
  • An explosion in other equipment. 

  • An explosion in the exhaust passages of an internal combustion engine. 

  • A premature explosion in the cylinder of a gas or oil engine during the exhaust or the compression stroke, tending to drive the piston in the wrong direction. 

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