goad vs incentive

goad

noun
  • That which goads or incites; a stimulus. 

  • A long, pointed stick used to prod animals. 

verb
  • To encourage or stimulate. 

  • To incite or provoke. 

  • To prod with a goad. 

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