In today's digital age, shopping methods have changed. When you shop online or offline, you must have heard terms like Coupons, Vouchers, Promo Codes. All of these help you save money, but do you know what is the difference between them? Let's take a look at the difference between these three and understand how they work.Coupons are a type of discount tool that you can present at the time of purchase to get a discount. Coupons are used especially in retail stores, supermarkets and online shopping. Types of coupons Physical coupons These are in paper form that you present in stores. Digital coupons These are found on online shopping sites in the form of codes that you enter at the time of checkout.