exhortation vs incentive

exhortation

noun
  • The act or practice of exhorting; the act of inciting to laudable deeds; incitement to that which is good or commendable. 

  • Language intended to incite and encourage 

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 exhortation and incentive occurred in a corpus of books? (source: Google Ngram Viewer )