flour vs semolina

flour

noun
  • Powder obtained by grinding or milling cereal grains, especially wheat, or other foodstuffs such as soybeans and potatoes, and used to bake bread, cakes, and pastry. 

  • Powder of other material. 

  • The food made by grinding and bolting cleaned wheat (not durum or red durum) until it meets specified levels of fineness, dryness, and freedom from bran and germ, also containing any of certain enzymes, ascorbic acid, and certain bleaching agents. 

  • Coordinate term: meal 

verb
  • To reduce to flour. 

  • To apply flour to something; to cover with flour. 

  • To break up into fine globules of mercury in the amalgamation process. 

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 flour and semolina occurred in a corpus of books? (source: Google Ngram Viewer )