elation vs self-congratulation

elation

noun
  • An exhilarating psychological state of pride and optimism. 

  • A feeling of joy and pride. 

  • A collineation that fixes all points on a line (called its axis) and all lines though a point on the axis (called its center). 

self-congratulation

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

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