What are the differences between glycerol and glycerin, and how are they commonly used in various industries?

Glycerol and glycerin are the same compound, with glycerol being the chemical term and glycerin the commercial term. They are commonly used in industries such as food, pharmaceuticals, and cosmetics as a humectant, solvent, and sweetener. Glycerol/glycerin is also used in the production of explosives, antifreeze, and as a component in the manufacturing of plastics and personal care products.