plop vs pounding

plop

noun
  • A sound or action like liquid hitting a hard surface, or an object falling into a body of water. 

  • Excrement. 

intj
  • Indicating the sound of something plopping. 

verb
  • To make the sound of an object dropping into a body of liquid. 

  • To defecate. 

  • To land heavily or loosely. 

pounding

noun
  • An act in which something or someone is pounded. 

adj
  • Characterized by heavy or loud throbs 

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