mort vs placket

mort

noun
  • A variety of dummy whist for three players. 

  • A player in a multi-user dungeon who does not have special administrator privileges and whose character can be killed. 

  • The exposed or dummy hand of cards in the game of mort. 

  • The skin of a sheep or lamb that has died of disease. 

  • A note sounded on a horn at the death of a deer. 

  • Death; especially, the death of game in hunting. 

  • A three-year-old salmon. 

  • A great quantity or number. 

placket

noun
  • An additional plate of steel on the lower half of the breastplate or backplate. 

  • A leather jacket strengthened with strips of steel. 

  • A slit or other opening in an item of clothing, to allow access to pockets or fastenings 

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