power supply vs tyranny

power supply

noun
  • A source of power such as the mains or a generator. 

  • That part of a piece of electronic apparatus that provides appropriate voltages for the rest of the electronics from the connected AC source. 

  • Used other than figuratively or idiomatically: see power, supply. 

tyranny

noun
  • Absolute power, or its use. 

  • A government in which a single ruler (a tyrant) has absolute power; this system of government. 

  • The office or jurisdiction of an absolute ruler. 

  • Extreme severity or rigour. 

  • A system of government in which power is exercised on behalf of the ruler or ruling class, without regard to the wishes of the governed. 

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