autarchy vs autonomy

autarchy

noun
  • Sovereignty or self-government (national political independence). 

  • A condition of absolute power. 

  • Autocracy (absolute rule by a single person). 

autonomy

noun
  • The right or condition of self-government; freedom to act or function independently. 

  • The capacity to make an informed, uncoerced decision. 

  • The capacity of a system to make a decision about its actions without the involvement of another system or operator. 

  • A self-governing country or region. 

  • The status of a church whose highest-ranking bishop is appointed by the patriarch of the mother church, but which is self-governing in all other respects. Compare autocephaly. 

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