biff vs purler

biff

noun
  • A sudden, sharp blow or punch. 

  • A wipeout. 

intj
  • The sound of a person being punched or hit. 

verb
  • To discard; to throw out; to throw away. 

  • To punch or hit. 

  • To wipe out; to faceplant; to fall. 

purler

noun
  • A knockdown blow; a blow that causes a person to fall headlong. 

  • Something extremely good. 

  • A headlong fall or tumble. 

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