inexpedience vs triviality

inexpedience

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

triviality

noun
  • The quality of being trivial or unimportant. 

  • Something which is trivial or unimportant. 

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