debate vs symposium

debate

noun
  • An argument, or discussion, usually in an ordered or formal setting, often with more than two people, generally ending with a vote or other decision. 

  • An informal and spirited but generally civil discussion of opposing views. 

  • A type of literary composition, taking the form of a discussion or disputation, commonly found in the vernacular medieval poetry of many European countries, as well as in medieval Latin. 

  • Discussion of opposing views. 

verb
  • To consider (to oneself), to think over, to attempt to decide 

  • To participate in a debate; to dispute, argue, especially in a public arena. 

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 debate and symposium occurred in a corpus of books? (source: Google Ngram Viewer )