comfort room vs netty

comfort room

noun
  • Any lavatory (both public or private) 

  • A public lavatory 

netty

noun
  • Any other place or fixture used for urination and defecation: a lavatory; a toilet. 

  • An outhouse: an outbuilding used as a lavatory. 

adj
  • Netted: made of or employing a net. 

  • Netlike. 

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