flump vs plop

flump

verb
  • To drop something heavily or with a dull sound. 

  • To move or fall heavily, or with a dull sound. 

noun
  • A type of large marshmallow. 

  • A fat out-of-shape person. 

  • The dull sound so produced. 

plop

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

  • To defecate. 

  • To land heavily or loosely. 

intj
  • Indicating the sound of something plopping. 

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

  • Excrement. 

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