elderdom vs tyranny

elderdom

noun
  • The authority, rule, or office of an elder. 

  • Preeminence; superiority. 

  • The role or influence of an elder or elders. 

  • The state of being an elder, or of being older; elderhood. 

  • Authority; dominion. 

tyranny

noun
  • The office or jurisdiction of an absolute ruler. 

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

  • 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. 

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