bearskin vs drugget

bearskin

noun
  • The pelt of a bear, especially when used as a rug. 

  • A tall ceremonial hat worn by members of some British regiments for ceremonial occasions; a busby. 

drugget

noun
  • An inexpensive coarse woolen cloth, used mainly for clothing. 

  • A floor covering made of drugget. 

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