mousetrap vs sweetening

mousetrap

noun
  • A slice of bread or toast topped with cheese and then grilled or microwaved. 

  • A website designed to open another copy of itself when the user tries to close the webpage. Frequently used by advertisers and pornographers. 

  • An antisubmarine rocket used mainly during World War II by the US Navy and US Coast Guard. 

  • A device for capturing or killing mice and other rodents. 

  • Ordinary, everyday cheese. 

verb
  • To trap; to trick or fool (someone) into a bad situation. 

  • To prevent (the user) from leaving a website by opening another copy when it is closed. 

sweetening

noun
  • A sweetener. 

  • The process of making something sweeter. 

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