den vs quad

den

noun
  • A squalid or wretched place; a haunt. 

  • Synonym of fort (“structure improvised from furniture, etc. for playing games.”) 

  • A comfortable room not used for formal entertaining. 

  • A group of Cub Scouts of the same age who work on projects together. 

  • A small cavern or hollow place in the side of a hill, or among rocks; especially, a cave used by a wild animal for shelter or concealment. 

verb
  • To ensconce or hide oneself in (or as in) a den. 

quad

noun
  • A joke used to fill long days of setting type. 

  • A quadriplegic person. 

  • A skate with four wheels. 

  • A quadcopter. 

  • A blank metal block used to fill short lines of type. 

  • A keyboard command which aligns text with the left or right margin, or centred between them. In combination, as quad left, quad right, or quad centre. 

  • A kind of round-robin tournament between four players, where each participant plays every other participant once. 

  • Quadruplex videotape. 

  • The quadriceps muscle. 

  • A quadrupel beer. 

  • A quad bike (from quadricycle) 

  • The Bible, Book of Mormon, Doctrine and Covenants, and Pearl of Great Price bound in a single volume. 

  • A quadruplet (infant). 

  • A quadrangle (quadrangular courtyard). 

  • A serving of four shots of espresso. 

  • A quadrilateral. 

  • A poster, measuring forty by thirty inches, advertising a cinematic film release. 

adj
  • Of or relating to quads. 

  • Having four shots of espresso. 

verb
  • To fill spaces in a line of type with quads. Also quad out. 

  • To twist four individually insulated conductors together as two pairs of twisted wires that are then twisted together. 

  • To align text with the left or right margin, or centre it. 

  • to ride a quad bike 

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