act upon vs shepherd

act upon

verb
  • To take action on the basis of information received or deduced. 

shepherd

verb
  • To watch over; to guide. 

  • To obstruct an opponent from getting to the ball, either when a teammate has it or is going for it, or if the ball is about to bounce through the goal or out of bounds. 

noun
  • A person who tends sheep, especially a grazing flock. 

  • Someone who watches over, looks after, or guides somebody. 

  • A swain; a rustic male lover. 

  • The pastor of a church; one who guides others in religion. 

  • A male sheep tender 

  • A German Shepherd. 

  • A male pastor 

  • A male watcher/guardian/guider/leader 

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