buggery vs butt sex

buggery

noun
  • Anal sex. 

  • A broken or damaged condition. 

  • Any sexual act deemed against nature, such as homosexuality, bestiality or necrophilia. 

butt sex

noun
  • Anal sex. 

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