farina vs semolina

farina

noun
  • A fine flour or meal made from cereal grains or from the starch or fecula of vegetables, extracted by various processes, and used in cookery. 

semolina

noun
  • Coarse grains produced at an intermediate stage of wheat flour milling. 

  • Such grains, usually from durum wheat, used in the preparation of pasta, couscous and various sweet dishes. 

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