moneymaker vs rear end

moneymaker

noun
  • (usually a woman's) butt, ass, rear end 

  • Someone or something that earns or makes money; anything lucrative or profitable. 

  • A lady’s breast. 

rear end

noun
  • The buttocks. 

  • The back or hindmost part of anything, such as a car. 

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