extravagance vs improvidence

extravagance

noun
  • Prodigality, as of anger, love, expression, imagination, or demands. 

  • Excessive or superfluous expenditure of money. 

improvidence

noun
  • The quality of being improvident; want of foresight or thrift. 

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