flooding vs superfluity

flooding

noun
  • Emotional overwhelm sometimes leading to a primal state of rage or panic. 

  • A form of therapy that treats a phobia by suddenly exposing the patient to the object of the phobia, instead of approaching it gradually. 

  • An act of flooding; a flood or gush. 

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 flooding and superfluity occurred in a corpus of books? (source: Google Ngram Viewer )