abattoir vs pigsty

abattoir

noun
  • A public slaughterhouse for cattle, sheep, etc. 

  • A place or event likened to a slaughterhouse, because of great carnage or bloodshed. 

pigsty

noun
  • An enclosure where pigs are kept. 

  • A dirty or very untidy place. 

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