murrey vs purpurate

murrey

adj
  • Of a mulberry colour. 

noun
  • A tincture, the colour of mulberries, between gules (red) and purpure (purple). 

  • The mulberry fruit. 

purpurate

adj
  • Of a purple colour. 

noun
  • A salt of purpuric acid. 

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