gammon vs headgear

gammon

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

  • Backgammon (the game itself). 

  • 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. 

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). 

headgear

noun
  • The rigging on the foresail. 

  • A type of orthodontic appliance attached to dental braces that aids in correcting severe bite problems. 

  • The harness that fits on a horse's head. 

  • The lifting gear at the head of a mine or deep well. 

  • Anything worn on the head, such as a hat, hood, helmet, etc. 

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