sovereignty vs tyranny

sovereignty

noun
  • Of a ruler: supreme authority over all things. 

  • An independent or sovereign territory. 

  • Of a polity: the state of making laws and controlling resources without the coercion of other nations. 

  • Of a person: the liberty to decide one's thoughts and actions. 

  • Excellence, mastery, preeminent efficacy. 

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 sovereignty and tyranny occurred in a corpus of books? (source: Google Ngram Viewer )