bird dog vs monitor

bird dog

verb
  • To watch closely. 

  • A multiservice tactical brevity code requesting configuration of sensors. 

  • To seek out. 

noun
  • A dog, especially a pointer, used in shooting to retrieve the dead birds. 

  • A tout. 

  • A person who seeks out real estate investment opportunities in exchange for a fee. 

  • A person who tries to steal someone else's romantic partner 

  • A radar detector (for detecting police speed traps). 

  • A hyperextension exercise performed lying on the knees, with one arm and the opposite leg lifted. 

monitor

verb
  • To watch over; to guard. 

noun
  • Someone who watches over something; a person in charge of something or someone. 

  • A monitor lizard. 

  • One of a class of relatively small armored warships with only one or two turrets (but often carrying unusually large guns for a warship of its size), usually designed for shore bombardment or riverine warfare rather than open-ocean combat. 

  • A device similar to a television set used as to give a graphical display of the output from a computer. 

  • A device that detects and informs on the presence, quantity, etc., of something. 

  • A program for viewing and editing. 

  • A tool holder, as for a lathe, shaped like a low turret, and capable of being revolved on a vertical pivot so as to bring the several tools successively into position. 

  • A studio monitor or loudspeaker. 

  • A monitor nozzle. 

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