wheaten vs wheatfield

wheaten

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

adj
  • Of, pertaining to, or made from wheat. 

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

wheatfield

noun
  • A field of wheat; a plot of land planted with wheat. 

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