anal vs buttfuck

anal

noun
  • Anal sex. 

  • Any of the anal scales of a reptile. 

adj
  • of, related to, intended for or involving the anus. 

  • Of a person, compulsive and stubborn, obsessed with neatness and accuracy, supposedly from not having progressed beyond the anal stage. 

  • Of the stage in psychosexual development when the child's interest is alleged to be concentrated on the anal region. 

  • Proximate to the thorax. 

verb
  • To penetrate anally. 

buttfuck

noun
  • An act of anal intercourse. 

verb
  • To perform an act of anal intercourse. 

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