aftersound vs banging

aftersound

noun
  • A sound that persists or remains audible after its source has ceased to produce it; the perception of such a sound. 

  • The second, slower phase of decay in the sound made by a piano string when it is struck. 

banging

noun
  • The action or sound of something that bangs. 

  • A session of sexual intercourse. 

adj
  • Excellent, brilliant, very exciting, top, great. 

  • Attractive; sexually appealing. 

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