shit bowl vs slop bucket

shit bowl

noun
  • A bowl used for defecation: a chamber pot or toilet. 

slop bucket

noun
  • A bucket used for urination and defecation: a chamber pot. 

  • A receptacle used to hold liquid waste. 

  • A pail used to hold food waste for disposal, e.g. by feeding to pigs. 

How often have the words shit bowl and slop bucket occurred in a corpus of books? (source: Google Ngram Viewer )