colloquy vs verbal exchange

colloquy

verb
  • To converse. 

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. 

verbal exchange

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