rebellion vs ungovernability

rebellion

noun
  • An organized, forceful subversion of the law of the land in an attempt to replace it with another form of government. 

  • Defiance of authority or control; the act of rebelling. 

  • Armed resistance to an established government or ruler. 

ungovernability

noun
  • The condition of being ungovernable 

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