skipping vs skiving

skipping

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

  • The act by which something is skipped or omitted. 

skiving

noun
  • A type of machining that skives metal, with various applications including gear cutting. 

  • A piece made in skiving (paring or splitting) leather, especially the part from the inner, or flesh, side. 

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