colloquy vs duologue

colloquy

noun
  • A conversation or dialogue. 

  • A church court held by certain Reformed denominations. 

  • A written discourse. 

  • A discussion during a trial in which a judge ensures that the defendant understands what is taking place in the trial and what their rights are. 

verb
  • To converse. 

duologue

noun
  • A conversation between two persons; dialogue. 

  • A dramatic performance or piece in the form of a dialogue limited to two speakers. 

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