jewel vs key fob

jewel

noun
  • A valuable object used for personal ornamentation, especially one made of precious metals and stones; a piece of jewellery. 

  • A precious or semi-precious stone; gem, gemstone. 

  • A bearing for a pivot in a watch, formed of a crystal or precious stone. 

  • Any of various lycaenid butterflies of the genus Hypochrysops. 

  • The clitoris. 

  • Anything precious or valuable. 

verb
  • To bejewel; to decorate or bedeck with jewels or gems. 

key fob

noun
  • An item carried on a key ring either as decoration or security. 

  • A passive wireless electronic device that usually uses RFID technology to control access to buildings, containers, computers, etc. by being placed near a detector. 

  • An active wireless electronic device that controls access to buildings or vehicles, such as a remote control for a car door lock. 

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