brackish vs filthy

brackish

adj
  • Distasteful; unpleasant; not appealing to the taste. 

  • Repulsive 

  • Salty or slightly salty, as a mixture of fresh and sea water, such as that found in estuaries. 

filthy

adj
  • Very unpleasant or disagreeable. 

  • Covered with filth; very dirty. 

  • Obscene or offensive. 

verb
  • To make very dirty; to saturate something with dirt. 

  • To cover in filth. 

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