campana vs curfew

campana

noun
  • A church bell, particularly a large bell used in medieval church steeples or towers. 

  • A bell-shaped vase. 

curfew

noun
  • The evening bell, which continued to be rung in many towns after the regulation itself became obsolete. 

  • Any regulation requiring people to be off the streets and in their homes by a certain time. 

  • The time when such restriction begins. 

  • A fireplace accessory designed to bank a fire by completely covering the embers. 

  • A regulation in feudal Europe by which fires had to be covered up or put out at a certain fixed time in the evening, marked by the ringing of an evening bell. 

  • A signal indicating this time. 

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