delight vs incentive

delight

noun
  • Something that gives great joy or pleasure. 

  • Joy; pleasure. 

verb
  • To give delight to; to affect with great pleasure; to please highly. 

  • To have or take great pleasure. 

incentive

noun
  • Something that motivates, rouses, or encourages. 

  • A bonus or reward, often monetary, to work harder. 

adj
  • Inciting; encouraging or moving; rousing to action; stimulating. 

  • Serving to kindle or set on fire. 

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