preemption vs procatalepsis

preemption

noun
  • The temporary interruption of a task without its cooperation and with the intention of resuming it at a later time. 

  • The purchase of something before it is offered for sale to others. 

  • The displacement of a lower jurisdiction's laws when they conflict with those of a higher jurisdiction. 

  • The purchase of public land by the occupant. 

procatalepsis

noun
  • Rebuttal of anticipated objections. 

  • A rhetorical exercise in which the speaker raises an objection to his own argument and then immediately answers it, in an attempt to strengthen the argument by dealing with possible counter-arguments. 

  • Left dislocation. 

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