black box vs furnishings

black box

noun
  • A type of theater characterized by a lack of decoration or complex mechanisms. 

  • A flight recorder; the brightly colored cockpit voice recorders and flight data recorders in an aircraft designed to aid in determining the cause of an accident. 

  • A device used in phreaking that prevents the calling party from being billed for the call placed. 

  • A theoretical construct or device with known input and output characteristics but unknown method of operation. 

  • Any similar device on motor vehicles, such as rail event recorders and ship trip recorders. 

verb
  • To focus on the inputs and outputs without worrying about the internal complexity. 

furnishings

noun
  • The objects, other than furniture, that occupy an interior space. 

  • Items of furniture and/or accessories by which something is equipped so as to be more useful, convenient, or comfortable. 

  • Accessories used with a dress. 

  • Furniture generally. 

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