drugget vs flooring

drugget

noun
  • A floor covering made of drugget. 

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

flooring

noun
  • A floor. 

  • The act of putting one's opponent on the floor; a knockdown. 

  • A material used to make floors. 

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