inaugurate vs round off

inaugurate

verb
  • To dedicate ceremoniously; to initiate something in a formal manner. 

  • To induct into office with a formal ceremony. 

adj
  • Invested with office; inaugurated. 

round off

verb
  • To complete or finish something. 

  • To change the shape of (an object) to make it smoother and especially more circular or ovoid. 

  • To change a number into an approximation having fewer significant digits. 

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