inexpedience vs luxury

inexpedience

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

luxury

noun
  • Very wealthy and comfortable surroundings. 

  • Something desirable but expensive. 

  • Something that is pleasant but not necessary in life. 

adj
  • very expensive 

  • not essential but desirable and enjoyable and indulgent. 

  • Pertaining to the top-end market segment for mass production mass market vehicles, above the premium market segment. 

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