interlocutor vs mediary

interlocutor

noun
  • A person who takes part in dialogue or conversation. 

  • A man in the middle of the line in a minstrel show who questions the end men and acts as leader. 

  • A decree of a court. 

  • An interlocutory judgement or sentence. 

mediary

noun
  • An intermediary or go-between; Something or someone that passes information, instructions, or influence between one person or thing and another person or thing. 

adj
  • occurring during the course of a disease. 

  • Having a primary hue (red, blue, or gold), as opposed to one that can be created by mixing colors with primary hues. 

  • Defining or inferring a generalization or category of meaning. 

  • Acting to cause or connect. 

  • Intermediate. 

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