goad vs motivation

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. 

motivation

noun
  • Something which motivates. 

  • A research rating that measures how the rational and emotional elements of a commercial affect consumer intention to consider, visit, or buy something. 

  • The action of motivating. 

  • Willingness of action especially in behavior. 

  • An incentive or reason for doing something. 

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