gammon vs penetrate

gammon

verb
  • To beat by a gammon (without the opponent bearing off a stone). 

  • To lash with ropes (on a ship). 

  • To cure bacon by salting. 

noun
  • Backgammon (the game itself). 

  • A rope fastening a bowsprit to the stem of a ship (usually called a gammoning). 

  • A victory in backgammon achieved when the opponent has not borne off a single stone. 

  • A cut of quick-cured pork leg. 

  • A middle-aged or older right-wing, reactionary white man, or such men collectively. 

penetrate

verb
  • To move a piece past the defending pieces of one's opponent. 

  • To enter into; to make way into the interior of; to pierce. 

  • To achieve understanding of, despite some obstacle; to comprehend; to understand. 

  • To affect profoundly through the senses or feelings; to move deeply. 

  • To insert the penis into an opening, such as a vagina, mouth or anus. 

  • To infiltrate an enemy to gather intelligence. 

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