elate vs incentive

elate

adj
  • Elated; exultant. 

verb
  • To lift up; raise; elevate. 

  • To make joyful or proud. 

incentive

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

  • Serving to kindle or set on fire. 

noun
  • Something that motivates, rouses, or encourages. 

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

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