What defines whiskey and how does it differ from other types of spirits?

Whiskey is a type of distilled alcoholic beverage made from fermented grain MASH. It is aged in wooden barrels, which gives it its distinct flavor. Whiskey differs from other spirits like vodka and rum in that it is made specifically from grains and aged in barrels, whereas vodka is typically made from grains or potatoes and rum is made from sugarcane or molasses.