cordiality vs tactlessness

cordiality

noun
  • A friendly utterance. 

  • to exchange cordialities with people 

  • The quality of being cordial. 

tactlessness

noun
  • The result or product of being tactless. 

  • The state or quality of being tactless. 

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