rubble vs sullage

rubble

noun
  • The broken remains of an object, usually rock or masonry. 

  • The whole of the bran of wheat before it is sorted into pollard, bran, etc.. 

  • A mass or stratum of fragments of rock lying under the alluvium and derived from the neighbouring rock. 

sullage

noun
  • Silt or sediment deposited from flowing water. 

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

  • That which sullies or defiles. 

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

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