hoax vs mock-up

hoax

noun
  • Anything deliberately intended to deceive or trick. 

verb
  • To deceive (someone) by making them believe something that has been maliciously or mischievously fabricated. 

mock-up

noun
  • A prototype, usually low-fidelity, such as a paper illustration, screenshot, or simple configuration of a screen with limited interaction. 

  • A scale or full-size model of a design or device which is not fully functional, used for teaching, demonstration, design evaluation, promotion, and other purposes. 

How often have the words hoax and mock-up occurred in a corpus of books? (source: Google Ngram Viewer )