tyranny vs tyranthood

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. 

tyranthood

noun
  • A governmental system based on a single ruler wielding absolute authority; tyranny. 

  • The state or condition of being a tyrant. 

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