palace vs pigsty

palace

noun
  • A large and lavishly ornate residence. 

  • Official residence of a head of state or other dignitary, especially in a monarchical or imperial governmental system. 

  • A large, ornate public building used for entertainment or exhibitions. 

pigsty

noun
  • A dirty or very untidy place. 

  • An enclosure where pigs are kept. 

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