Glucose and Fructose are two of the most common types of SUGARS found in nature. Glucose is a simple sugar that is found in many fruits, vegetables, and grains, while Fructose is a sweetener found in honey, fruits, and some vegetables. Both Glucose and Fructose are important sources of energy for the body and are essential for proper metabolism. They are also used to make carbohydrates, which are necessary for the body to function properly.