inexhaustibility vs opulence

inexhaustibility

noun
  • The state or condition of being inexhaustible. 

opulence

noun
  • ostentatious display of wealth and luxury; plushness. 

  • wealth 

  • abundance, bounty, profusion 

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