downthrow vs trashing

downthrow

noun
  • Ruin; defeat. 

  • A depression of the strata on one side of a fault 

trashing

noun
  • The act by which something is trashed. 

  • Dumpster diving. 

  • A tradition of throwing food, confetti, etc. over students after their final examinations. 

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