discretion vs thoughtlessness

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. 

thoughtlessness

noun
  • heedless disregard for the consequences of one's actions 

  • disregard for other's feelings 

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