silence vs symposium

silence

intj
  • Be silent. 

noun
  • deadly silence 

  • The act of refraining from speaking. 

  • The absence of any sound. 

verb
  • To repress the expression of something. 

  • To suppress criticism, etc. 

  • To block gene expression. 

  • To murder. 

  • To make (someone or something) silent. 

symposium

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

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

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

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