circuit breaker vs light switch

circuit breaker

noun
  • An electrical switch capable of opening and closing an electrical circuit in all operating conditions, including fault situations. 

  • Synonym of trading curb 

  • More specifically, a circuit breaker that automatically breaks overcurrent conditions; a type of overcurrent protective device. 

  • Quarantine measures intended to prevent spread of pandemics, such as the coronavirus. 

light switch

noun
  • A switch, usually mounted on a wall in a building, used to turn the light on or off. 

How often have the words circuit breaker and light switch occurred in a corpus of books? (source: Google Ngram Viewer )