plonk vs plunk

plonk

noun
  • The sound of something solid landing. 

  • Cheap or inferior everyday wine. 

  • AC Plonk 

  • A female police constable. 

intj
  • The sound made by something solid landing. 

  • The supposed sound of adding a user to one's killfile. 

adv
  • Precisely and forcefully. 

verb
  • To sit down heavily and without ceremony. 

  • To set or toss (something) down carelessly. 

  • To automatically ignore a particular poster. 

plunk

noun
  • The dull thud of something landing on a surface. 

verb
  • To pluck and quickly release (a musical string). 

  • To be a truant from (school). 

  • To intentionally hit the batter with a pitch. 

  • To croak. 

  • To land suddenly or heavily; to plump down. 

  • To drop or throw something heavily onto or into something else, so that it makes a dull sound. 

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