addressee vs interlocutor

addressee

noun
  • A person or entity to whom discourse is directed, or the words referring to such an entity. 

  • The person or organization to which something, such as a letter or message, is addressed or sent, for whom the item is intended. 

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. 

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