cacography vs chicken scratch

cacography

noun
  • Poor or illegible handwriting. 

  • Bad spelling or punctuation, especially unintuitive spellings considered as a feature of a whole language or dialect. 

chicken scratch

noun
  • Cramped or illegible handwriting. 

  • Chicken feed consisting of random mixed grains such as corn, wheat, barley, sorghum and milling by-products. 

  • A type of cross-stitch embroidery done on gingham fabric. 

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