longhouse vs outhouse

longhouse

noun
  • A long communal housing of the Iroquois and some other American Indians, the Malaysians, the Indonesians, the Vikings, and many other peoples. 

outhouse

verb
  • To house in a separate building. 

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

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