deckhouse vs stateroom

deckhouse

noun
  • A cabin that protrudes above a ship's deck. 

stateroom

noun
  • A superior cabin for a ship's officer or captain. 

  • An apartment in a palace or great house for use on ceremonial occasions. 

  • A private cabin in a ship or train. 

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