outhouse vs pissoir

outhouse

noun
  • An outbuilding, typically permanent, containing a toilet or seat over a cesspit. 

verb
  • To house in a separate building. 

pissoir

noun
  • A public urinal typically found in European, especially French, streets. 

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