monitor vs tapper

monitor

noun
  • A studio monitor or loudspeaker. 

  • 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 monitor nozzle. 

verb
  • To watch over; to guard. 

tapper

noun
  • One who makes a tapping noise. 

  • A weakly hit ground ball. 

  • A phone tapper or wiretapper. 

  • In early wireless telegraphs, a device used to shake loose the filings of a coherer. 

  • A tap-dancer. 

  • A tapster. 

  • An assistant in the sport of paraswimming who taps blind or visually impaired swimmers with a pole to indicate when they should turn around. 

  • The lesser spotted woodpecker. 

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