bashing vs flagellation

bashing

noun
  • An instance of bashing; a physical or verbal attack. 

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 

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