counselor vs interlocutor

counselor

noun
  • An attorney. 

  • A children’s supervisor, usually at camp. 

  • A school counselor, often in a specialty such as careers, education, or health. 

  • A professional who counsels people, especially on personal problems. 

  • A high ranking diplomat, usually just below an ambassador or minister. 

interlocutor

noun
  • A decree of a court. 

  • 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. 

  • An interlocutory judgement or sentence. 

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