courtesy vs incivility

courtesy

adj
  • Supplied free of charge. 

  • Given or done as a polite gesture. 

noun
  • A curtsey. 

  • The life interest that the surviving husband has in the real or heritable estate of his wife. 

  • A polite gesture or remark, especially as opposed to an obligation or standard practice. 

  • Consent or agreement in spite of fact; indulgence. 

  • Polite behavior. 

  • Willingness or generosity in providing something needed. 

incivility

noun
  • Lack of civilization; a state of rudeness or barbarism. 

  • The state of being uncivil; lack of courtesy; rudeness in manner. 

  • Any act of rudeness or ill-breeding. 

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