discourtesy vs discretion

discourtesy

noun
  • Lack of courtesy; rudeness. 

  • A rude act. 

discretion

noun
  • The quality of being discreet. 

  • The freedom to make one's own judgements. 

  • Individual justice from experience in quality of perception: discrete. 

  • The ability to make wise choices or decisions. 

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