guerdon vs motivate

guerdon

verb
  • To give such a reward to. 

noun
  • A reward, prize or recompense for a service; an accolade. 

motivate

verb
  • To provide someone with an incentive to do something; to encourage. 

  • To animate; to propel; to cause to take action 

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