deficit vs superfluity

deficit

noun
  • Deficiency in amount or quality; a falling short; lack. 

  • A situation wherein, or amount whereby, spending exceeds (e.g. government) revenue. 

superfluity

noun
  • The quality or state of being superfluous; overflowingness. 

  • Something superfluous, as a luxury. 

  • Collective noun for a group of nuns. 

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