oatbread vs oatmeal

oatbread

noun
  • bread made with oatmeal 

oatmeal

noun
  • Meal made from rolled or round oats. 

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

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

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

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