colloquy vs verbal exchange

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. 

verbal exchange

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