ego trip vs joy

ego trip

noun
  • An act of self-aggrandizement, undertaken to increase one's own power and influence or to draw attention to one's own importance. 

joy

verb
  • To feel joy, to rejoice. 

noun
  • Anything that causes such a feeling. 

  • Luck or success; a positive outcome. 

  • A feeling of extreme happiness or cheerfulness, especially related to the acquisition or expectation of something good. 

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