skipping vs trashing

skipping

noun
  • The act by which something is skipped or omitted. 

  • The game, activity, or exercise of jump rope. 

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 skipping and trashing occurred in a corpus of books? (source: Google Ngram Viewer )