goad vs shot in the arm

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. 

shot in the arm

noun
  • A stimulus; a boost in energy, morale, or well-being. 

  • An injection of a drug into the arm, whether for medical or recreational purposes. 

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