dirty washing vs suffusion

dirty washing

noun
  • synonym of dirty laundry 

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 dirty washing and suffusion occurred in a corpus of books? (source: Google Ngram Viewer )