deluge vs tsunami

deluge

noun
  • An overwhelming amount of something; anything that overwhelms or causes great destruction. 

  • A great flood or rain. 

  • A system for flooding or drenching a space, container, or area with water in an emergency to prevent or extinguish a fire. 

verb
  • To flood with water. 

  • To overwhelm. 

tsunami

noun
  • A large and generally unstoppable surge. 

  • A very large and destructive wave, generally caused by a tremendous disturbance in the ocean, such as an undersea earthquake or volcanic eruption. Tsunami are usually a series of waves, or wave train. 

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