purgation vs remorsefulness

purgation

noun
  • The process or act of cleansing from sin or guilt. 

  • The process or act of purging, such as by the use of a purgative. 

remorsefulness

noun
  • The quality of being remorseful. 

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