신용카드 상품권 and 문화상품권, while both serving as gift cards, are used for different purposes. 신용카드 상품권 are general-purpose prepaid cards that can be used for most retail purchases, both online and offline, just like a regular credit card. On the other hand, 문화상품권 are specific to cultural activities, https://www.wanzani.com/post/45984_give-the-gift-of-art-and-music-cultural-certificates-at-a-discount-art-and-music.html