corn sugar vs maize syrup

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 

maize syrup

noun

  • high fructose corn syrup 

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