crapper vs shithouse

crapper

noun
  • A lavatory or outhouse. 

  • A rapper, or a performer of rap music. 

  • A chamber pot or toilet, particularly (dated) a flush toilet by Thomas Crapper. 

  • A half-glass of whiskey. 

shithouse

noun
  • An outhouse, an outbuilding used as a lavatory 

  • A coward: one who is overly fearful or timid. 

  • A filthy place. 

verb
  • To engage in persistent unsporting behaviour or gamesmanship; to play in a cynical, ugly manner; to cheat without being punished. 

adj
  • Of poor quality. 

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