dog's breakfast vs dyscrasy

dog's breakfast

noun
  • An unappealing mixture; a disorderly situation; a mess. 

  • Used other than figuratively or idiomatically: see dog, breakfast. 

dyscrasy

noun
  • Disharmony 

  • A bodily disorder; an imbalance of the humours 

How often have the words dog's breakfast and dyscrasy occurred in a corpus of books? (source: Google Ngram Viewer )