circuit breaker vs contra

circuit breaker

noun
  • Synonym of trading curb 

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

  • 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. 

contra

noun
  • A deal to swap goods or services. 

  • A conservative; originally tied to Nicaraguan counter-revolutionaries. 

  • An entry (or account) that cancels another entry (or account). 

  • Any of the musical instruments in the contrabass range, e.g. contrabassoon, contrabass clarinet or, especially, double bass. 

  • A contra dance. 

adv
  • contrary to something 

verb
  • To undo; to reverse. 

prep
  • against; contrary or opposed to; in opposition or contrast to 

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