scourging vs tanning

scourging

noun
  • A beating with a scourge; a flogging. 

tanning

noun
  • A spanking. 

  • The process of making leather, which does not easily decompose, from the skins of animals, which do. 

  • The acquisition of a tan, either by exposure to the sun, or artificially. 

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