flagellation vs welting

flagellation

noun
  • The formation by plants of flagella, or their arrangement 

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

welting

noun
  • The act of making reinforcing welts. 

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