descant vs listening

descant

verb
  • To sing or play a descant. 

  • To discuss at length. 

noun
  • A lengthy discourse on a subject. 

  • A counterpoint melody sung or played above the theme. 

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. 

noun
  • Skill or ability of perceiving spoken language. 

  • Action of the verb listening 

  • An educational exercise involving listening 

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