inexpedience vs worthlessness

inexpedience

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

worthlessness

noun
  • The quality of lacking worth, of being valueless, useless or devoid of benefit. 

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