fanny vs rear end

fanny

noun
  • The buttocks; arguably the most nearly polite of several euphemisms. 

  • The female genitalia. 

  • Women viewed as sexual objects. 

  • Mess kettle or cooking pot. 

  • Sexual intercourse with a woman. 

rear end

noun
  • The buttocks. 

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

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