indulgence vs self-congratulation

indulgence

noun
  • A wish or whim satisfied. 

  • An indulgent act; a favour granted; gratification. 

  • A pardon or release from the expectation of punishment in purgatory, after the sinner has been granted absolution. 

  • The act of catering to someone's every desire. 

  • The act of indulging. 

  • Tolerance. 

  • Something in which someone indulges. 

verb
  • to provide with an indulgence 

self-congratulation

noun
  • self-satisfied congratulation of oneself for one's achievements or situation 

How often have the words indulgence and self-congratulation occurred in a corpus of books? (source: Google Ngram Viewer )