tyranny vs world power

tyranny

noun
  • 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. 

  • Absolute power, or its use. 

  • 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. 

world power

noun
  • A nation or state so powerful that it can influence world affairs. 

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