Candy, also called sweets or lollies, is a confection that features sugar as a principal ingredient. The category, called sugar confectionery, encompasses any sweet confection, including chocolate, chewing gum, and sugar candy. ... However, the definition of candy also depends upon how people treat the food.
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Candy is basically sugar with other ingredient to enhance there aroma and taste but Chocolate is made from cocoa seeds and sugar is added to make the taste of Chocolate better. Although there are some chocolate candy also available. Which basically means chocolate added in sugar to make it enticing.