colloquium vs conventicle

colloquium

noun
  • A colloquy; a meeting for discussion. 

  • An address to an academic meeting or seminar. 

  • An academic meeting or seminar usually led by a different lecturer and on a different topic at each meeting. 

  • That part of the complaint or declaration in an action for defamation which shows that the words complained of were spoken concerning the plaintiff. 

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 colloquium and conventicle occurred in a corpus of books? (source: Google Ngram Viewer )