steeping vs suffusion

steeping

noun
  • An instance of something being steeped; a wetting. 

  • A 13th-century coin circulated in Ireland as a debased sterling silver penny, outlawed under King Edward I. 

suffusion

noun
  • The state of being wet. 

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

  • coat, coating, film, plating. 

  • The state of becoming red on the surface. 

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