conclave vs conventicle

conclave

noun
  • A private meeting; a closed or secret assembly. 

  • A closed meeting in which the elector cardinals of the Roman Catholic Church choose a new pope. 

  • The group of cardinals involved in a conclave. 

  • The set of apartments in which the elector cardinals are secluded while a conclave takes place. 

conventicle

noun
  • The place where such a meeting is held. 

  • A secret, unauthorized or illegal religious meeting. 

  • A Quaker meetinghouse. 

verb
  • To hold a secret, unauthorized or illegal religious meeting. 

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