casino vs stateroom

casino

noun
  • A public building or room for gambling. 

  • A card game for two to four players. 

stateroom

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

  • A private cabin in a ship or train. 

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

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