flagellation vs flaying

flagellation

noun
  • A beating consisting of lashes, notably as corporal punishment or mortification, such as a whipping or scourging. 

  • The formation by plants of flagella, or their arrangement 

flaying

noun
  • The act by which something is flayed. 

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