oatmeal vs wheaten

oatmeal

adj
  • Of a light greyish brown colour, like that of oatmeal 

noun
  • A light greyish brown colour, like that of oatmeal. 

  • Meal made from rolled or round oats. 

  • A breakfast cereal made from rolled oats, cooked in milk and/or water. 

wheaten

adj
  • Of a pale yellow-beige colour, like that of wheat. 

  • Of, pertaining to, or made from wheat. 

noun
  • A pale yellow or beige colour, like that of wheat. 

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