benefactor vs heavy hitter

benefactor

noun
  • Someone who performs good or noble deeds. 

  • Somebody who gives a gift, often money to a charity. 

heavy hitter

noun
  • A person of considerable importance who is a major decision maker or capable achiever; an especially significant organization or an especially functional object. 

  • A player with a favorable batting average who is especially good at hitting the ball deep into the outfield or farther. 

  • In any sport, a strong, physical player who is particularly effective. 

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