advisor vs quarterback

advisor

noun
  • A xiangqi piece, that is moved one point diagonally and confined within the palace. 

  • One who offers advice. 

quarterback

noun
  • A position just behind the forwards, or one who plays this position. 

  • An offensive back who receives the snap (hike) and then blocks the defense from crossing the line of scrimmage; a blocking back. 

  • An offensive back whose primary job is to pass the ball in a play. 

verb
  • To play the position of quarterback. 

  • To lead a team or group; to be primarily responsible for some group project or activity. 

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