autarchy vs nationhood

autarchy

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

  • A condition of absolute power. 

  • Autocracy (absolute rule by a single person). 

nationhood

noun
  • The fact of achieving national independence or autonomy. 

  • The quality of being a nation. 

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