four vs quadrumvirate

four

noun
  • The crew rowing in a four boat. 

  • Anything measuring four units, as length. 

  • The digit or figure 4; an occurrence thereof. 

  • A regatta event for four boats. 

  • A person who is four years old. 

  • An event in which the batsmen run four times between the wickets or, more often, a batsman hits a ball which bounces on the ground before passing over a boundary, resulting in an award of 4 runs for the batting team. If the ball does not bounce before passing over the boundary, a six is awarded instead. 

  • A power forward. 

  • The shell itself. 

num
  • Describing a set or group with four elements. 

  • A numerical value equal to 4; the number after three and before five; two plus two. This many dots (••••) 

quadrumvirate

noun
  • Synonym of quattuorvirate. 

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