chuffed vs on top of the world

chuffed

adj

  • Very pleased or satisfied; delighted. 

  • Displeased; gruff. 

on top of the world

prep

  • Delighted; ecstatic; exceptionally pleased, happy, or satisfied. 

How often have the words chuffed and on top of the world occurred in a corpus of books? (source: Google Ngram Viewer )