delicacy vs discreetness

delicacy

noun
  • Tact and propriety; the need for such tact. 

  • Something appealing, usually a pleasing food, especially a choice dish of a certain culture suggesting rarity and refinement. 

  • The quality of being delicate. 

  • Refinement in taste or discrimination. 

  • Fineness or elegance of construction or appearance. 

  • Frailty of health or fitness. 

discreetness

noun
  • The state or quality of being discreet. 

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