skipping vs upsurge

skipping

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

  • The act by which something is skipped or omitted. 

upsurge

noun
  • A sudden strong rise or flow. 

verb
  • to surge up, or to become stronger or greater 

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