gammon vs skull

gammon

verb
  • To lash with ropes (on a ship). 

  • To cure bacon by salting. 

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

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. 

skull

verb
  • To hit in the head with a fist, a weapon, or a thrown object. 

  • To strike the top of (the ball). 

noun
  • A crust formed on the ladle, etc. by the partial cooling of molten metal. 

  • The mind or brain. 

  • The crown of the headpiece in armour. 

  • A shallow bow-handled basket. 

  • The main bones of the head considered as a unit; including the cranium, facial bones, and mandible. 

  • These bones as a symbol for death; death's-head. 

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