aide-mémoire vs hearing

aide-mémoire

noun
  • A document circulated in a meeting or summit for discussion purposes. 

  • A memory aid; a reminder or memorandum, especially a book or document serving this purpose. 

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. 

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