plop vs teardrop

plop

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

  • Excrement. 

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. 

teardrop

noun
  • The shape of a drop of liquid about to fall. (Note that once detached from a surface, a drop changes shape to become spherical). 

  • a single tear (clear, salty liquid secreted by the eye). 

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