glucose vs sweetener

glucose

noun
  • A simple monosaccharide (sugar) with a molecular formula of C₆H₁₂O₆; it is a principle source of energy for cellular metabolism. 

sweetener

noun
  • Something added to food to sweeten its taste, especially an artificial substitute for sugar. 

  • A shill bidder at an auction. 

  • Something given or added to added to a deal to sweeten another's attitude, especially a bribe or kickback. 

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