hypomelanistic vs melanoid

hypomelanistic

adj

  • Having less than the normal amount of melanin pigment in the skin. 

melanoid

noun

  • Synonym of melanoidin 

adj

  • Relating to, or afflicted with, melanosis. 

  • Relating to, or resembling, melanin. 

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