dung vs sullage

dung

noun
  • A type of manure, as from a particular species or type of animal. 

  • Manure; animal excrement. 

verb
  • To release dung: to defecate. 

  • To immerse or steep, as calico, in a bath of hot water containing cow dung, done to remove the superfluous mordant. 

  • To discard (especially rubbish); to chuck out. 

  • To fertilize with dung. 

sullage

noun
  • That which sullies or defiles. 

  • Silt or sediment deposited from flowing water. 

  • The scoria on the surface of molten metal in the ladle. 

  • The liquid discharges from kitchens, washbasins, toilets etc; sewage. 

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