What does is it mean to Redeem coupons?

So, me and my mother have been watching Extreme Couponing and we're inspired :) But, we get confused when the coupons mention 'redeem'. What does it mean to redeem your coupon. Is that just another word for using your coupon? Like to redeem it is to use it? I have one that says 'Redeem At Dollar... show more So, me and my mother have been watching Extreme Couponing and we're inspired :) But, we get confused when the coupons mention 'redeem'. What does it mean to redeem your coupon. Is that just another word for using your coupon? Like to redeem it is to use it? I have one that says 'Redeem At Dollar General'. What does it mean by REDEEM???
--thanks :)
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