pile-up vs wham

pile-up

noun
  • A pile of crashed vehicles due to a traffic accident. 

  • A pile of tackling players. 

  • An accumulation that occurs over time, especially one which is not welcome. 

wham

noun
  • the sound of such a blow; a thud 

  • a forceful blow 

verb
  • to strike or smash (into) something with great force or impact 

intj
  • Used to indicate something sudden, unanticipated, and dramatic has occurred. 

  • The sound of a forceful blow. 

How often have the words pile-up and wham occurred in a corpus of books? (source: Google Ngram Viewer )