percipience vs perspection

percipience

noun
  • perception 

  • The state or condition of being highly perceptive, as if in an almost hypnotic or telepathic state. 

perspection

noun
  • perspective 

  • contemplation; scrutiny 

  • perspicuity 

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