black box vs gimcrack

black box

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

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

  • 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. 

gimcrack

verb
  • To put together quickly and without much care; to bodge. 

  • To embellish with gimcracks. 

noun
  • Something showy but worthless; a bauble or gimmick. 

adj
  • Showy but of poor quality; worthless. 

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