flooding vs overflow

flooding

noun
  • An act of flooding; a flood or gush. 

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

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

overflow

noun
  • The spillage resultant from overflow; excess. 

  • The situation where a value exceeds the available numeric range. 

  • Outlet for escape of excess material. 

verb
  • To flow over the edge of a container. 

  • To exceed limits or capacity. 

  • To (cause to) exceed the available numeric range. 

  • To cover with a liquid, literally or figuratively. 

  • To flow over the brim of (a container). 

  • To be superabundant; to abound. 

  • To cause an overflow. 

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