sousing vs steeping

sousing

noun
  • An immersing or drenching in liquid. 

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. 

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