This is the 8291st most frequent Japanese word.
引換
Exchange; redemption; trade.
In this sentence, '引換券' (exchange ticket) refers specifically to a physical item which is exchanged to claim another item, emphasizing its utility in transactions.
商品の受け渡しは引換券を持参してください。
Please bring the exchange ticket for handing over the product.
The term '引換' here is used in connection with '条件' (conditions), signifying the fulfillment of specified terms in order to qualify for an exchange involving a gift.
引換条件を満たしたらプレゼントがもらえます。
You can receive the gift once you fulfill the exchange conditions.
The term '引換' here is used to denote 'in exchange for', describing a transaction where one item (the coupon) is given in order to receive another (the product).