boarding house vs chambers

boarding house

noun
  • A private house in which paying residents are provided with accommodation and meals. 

  • A boarding school building where boarders live during term time. 

chambers

noun
  • Chiefly in in chambers: a judge's private office which is used for hearings that do not need to be held in open court. 

  • Originally, a set of rooms at an Inn of Court used by one or more barristers as an office and residence; now, the office of one or more barristers in any building. 

  • In full king's chambers: parts of the sea next to the coast of England and Wales delimited by imaginary lines connecting headlands, over which the Crown asserted exclusive jurisdiction; these have now been superseded by the concept of the territorial sea. 

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