corn sugar vs glucose/fructose

corn sugar

noun
  • A deceptive term for high fructose corn syrup developed by corn refiners meant to imply sugar 

  • Dextrose, especially originating from corn starch 

glucose/fructose

noun
  • High fructose corn syrup. 

How often have the words corn sugar and glucose/fructose occurred in a corpus of books? (source: Google Ngram Viewer )