consultation vs symposium

consultation

noun
  • A conference for the exchange of information and advice. 

  • An appointment or meeting with a professional person, such as a doctor. 

  • The act of consulting. 

symposium

noun
  • A conference or other meeting for discussion of a topic, especially one in which the participants make presentations. 

  • A drinking party in Ancient Greece, especially one with intellectual discussion. 

  • A collection of essays, articles or papers on a particular subject by a number of contributors. 

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