approval vs rebellion

approval

noun
  • Something mailed by a seller to a collector to match their stated interests; the collector can approve of or return the item. 

  • An expression granting permission; an indication of agreement with a proposal; an acknowledgement that a person, thing, or event meets requirements. 

  • An expression of favorable acceptance and encouragement; a compliment that also condones. 

rebellion

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

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

  • Armed resistance to an established government or ruler. 

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