foreshadowing vs procatalepsis

foreshadowing

noun
  • A literary device whereby an author drops hints or symbolic representations of plot developments to come later in the story. 

procatalepsis

noun
  • 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. 

  • Rebuttal of anticipated objections. 

  • Left dislocation. 

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