incongruity vs inexpedience

incongruity

noun
  • The state of being incongruous, or lacking congruence. 

  • A thing that is incongruous. 

  • An instance or point of disagreement 

inexpedience

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

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