drenching vs suffusion

drenching

noun
  • The act by which something is drenched; a soaking. 

  • The administering of a medicinal draught to an animal. 

suffusion

noun
  • The act of pouring a liquid over or soaking something. 

  • coat, coating, film, plating. 

  • The state of becoming red on the surface. 

  • The state of being wet. 

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