crystal-gazing vs penetration

crystal-gazing

noun
  • The action or practice of gazing into a crystal ball in the hope or belief of seeing the future. 

  • The making of predictions about the future, especially when these are seen as very speculative. 

penetration

noun
  • The act of penetrating a given situation with the mind or faculties; perception, discernment. 

  • Specifically, the insertion of the penis (or similar object) during sexual intercourse. 

  • The act of penetrating something. 

  • A number or fraction that represents how many cards/decks will be dealt before shuffling, in contrast to the total number of cards/decks in play. 

  • The proportion of the target audience who buy the advertised product or service. 

How often have the words crystal-gazing and penetration occurred in a corpus of books? (source: Google Ngram Viewer )