expulsion vs inauguration

expulsion

noun
  • The act of expelling or the state of being expelled. 

inauguration

noun
  • The act of inaugurating, or inducting into office with solemnity; investiture by appropriate ceremonies. 

  • The formal beginning or initiation of any movement, enterprise, event etc. 

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