council vs listenership

council

noun
  • Discussion or deliberation. 

  • A committee that leads or governs (e.g. city council, student council). 

listenership

noun
  • The act of paying attention to a conversation or speech; listening. 

  • The audience that listens to a certain form or genre of audio material (specifically (Internet, radio), an audio broadcast such as a radio program or a podcast). 

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