breaker vs circuit breaker

breaker

noun
  • Something that breaks. 

  • A person who specializes in breaking things. 

  • A horsebreaker. 

  • The building in which such a machine is placed. 

  • A small cask of liquid kept permanently in a ship's boat in case of shipwreck. 

  • A machine for breaking rocks, or for breaking coal at the mines. 

  • A wave breaking into foam against the shore, or against a sandbank, or a rock or reef near the surface, considered a useful warning to ships of an underwater hazard 

  • A breakdancer. 

circuit breaker

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

  • Synonym of trading curb 

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

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

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