penetration vs pricking

penetration

noun
  • The act of penetrating something. 

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

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

  • 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. 

pricking

noun
  • The act of piercing or puncturing with a sharp point. 

  • The driving of a nail into a horse's foot so as to produce lameness. 

  • A sensation that pricks. 

  • A nicking. 

  • The mark or trace left by a hare's foot; a prick. 

  • The act of tracing a hare by its footmarks. 

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