coup vs nullification

coup

verb
  • To make a coup. 

noun
  • A quick, brilliant, and highly successful act. 

  • A coup d'état. 

  • A takeover of one group by another. 

  • A blow against an enemy delivered in a way that shows bravery. 

  • A single roll of the wheel at roulette, or a deal in rouge et noir. 

  • One of various named strategies employed by the declarer to win more tricks, such as the Bath coup. 

nullification

noun
  • The nullification crisis in U.S. history, confrontation between the state of South Carolina and the federal government in 1832–33 over the former's attempt to declare null and void within the state the federal Tariffs of 1828 and 1832. 

  • Surgical removal of genitals (and sometimes nipples) as a form of body modification; a person who has undergone this surgery is a nullo. 

  • The act of nullifying; a rendering void and of no effect, or no legal effect. 

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