love nest vs slaughterhouse

love nest

noun
  • A place suitable for or used for having sexual intercourse. 

  • A residence, especially a condominium or cabin, where a couple (particularly a newly cohabiting/married couple) can enjoy each other's company. 

  • The vagina. 

slaughterhouse

noun
  • A place where animals are slaughtered. 

  • The scene of a massacre. 

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