bungholing vs cunnilingus

bungholing

noun

  • anal sex 

  • ruining, screwing-over 

adj

  • buggering 

cunnilingus

noun

  • Oral sex in which a woman's clitoris and/or vulva is orally stimulated. 

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