chalk talk vs listening

chalk talk

noun
  • A music hall act in which a performer makes chalk caricatures whilst reciting a monologue 

  • An informal lecture on an academic subject. 

listening

noun
  • Skill or ability of perceiving spoken language. 

  • Action of the verb listening 

  • An educational exercise involving listening 

adj
  • Of an action that is performed with caution and attention to sounds. 

  • Of something that is used in order to hear or to improve the ability to hear. 

  • Of something or someone that listens. 

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