delicacy vs luxury

delicacy

noun
  • 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. 

  • Tact and propriety; the need for such tact. 

  • Frailty of health or fitness. 

luxury

noun
  • Something that is pleasant but not necessary in life. 

  • Very wealthy and comfortable surroundings. 

  • Something desirable but expensive. 

adj
  • very expensive 

  • not essential but desirable and enjoyable and indulgent. 

  • Pertaining to the top-end market segment for mass production mass market vehicles, above the premium market segment. 

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