inexpedience vs severity

inexpedience

noun
  • The quality or state of being inexpedient; unsuitableness or impropriety. 

severity

noun
  • The degree of something undesirable; badness or seriousness. 

  • The state of being severe. 

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