autarchy vs enfranchisement

autarchy

noun
  • Autocracy (absolute rule by a single person). 

  • A condition of absolute power. 

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

enfranchisement

noun
  • The act of enfranchising 

  • The investiture with any of several municipal privileges 

  • the conversion of a copyhold estate into a freehold estate 

  • A release from slavery 

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