купон означава в английски

coupon [coupons]▼(certificate of interest due)
noun
[UK: ˈkuː.pɒn] [US: ˈkuː.ˌpɒn]

voucher [vouchers]▼(a piece of paper that entitles the holder to a discount, or that can be exchanged for goods and services)
noun
[UK: ˈvaʊ.tʃə(r)] [US: ˈvaʊ.tʃər]