anticipation vs preemption

anticipation

noun
  • The act of anticipating, taking up, placing, or considering something beforehand, or before the proper time in natural order. 

  • Prepayment of a debt, generally in order to pay less interest. 

  • A non-harmonic tone that is lower or higher than a note in the previous chord and a unison to a note in the next chord. 

  • Prolepsis. 

  • The eagerness associated with waiting for something to occur. 

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. 

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