dye vs polychromasia

dye

noun
  • Any hue, color, or blee. 

  • A colourant, especially one that has an affinity to the substrate to which it is applied. 

verb
  • To colour with dye, or as if with dye. 

polychromasia

noun
  • A disorder in which there is an abnormally high number of red blood cells in the bloodstream as a result of their having been prematurely released from the bone marrow during blood formation. 

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