high-handedness vs oligarchy

high-handedness

noun
  • The state or quality of being high-handed. 

oligarchy

noun
  • Those who make up an oligarchic government. 

  • A state ruled by such a government. 

  • A government run by only a few, often the wealthy. 

How often have the words high-handedness and oligarchy occurred in a corpus of books? (source: Google Ngram Viewer )