hearing vs keynote

hearing

noun
  • A proceeding at which discussions are heard. 

  • The sense used to perceive sound. 

  • The act by which something is heard. 

  • A legal procedure done before a judge, without a jury, as with an evidentiary hearing. 

adj
  • Able to hear, as opposed to deaf. 

keynote

noun
  • The main theme of a speech, a written work, or a conference. 

  • The note on which a musical key is based; the tonic. 

  • A speech that sets the main theme of a conference or other gathering; a keynote speech or keynote address. 

verb
  • To deliver a speech that sets the main theme of a conference or other gathering. 

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