A coupon will usually have a picture of a product. This often matches the wording on the coupon, but not always. In couponing, the coupon words are more important than the picture.
For example, if the coupon picture shows vanilla Jello pudding, but the coupon is written to say “save $0.50 on any Jello pudding”, you can buy butterscotch, chocolate, or any other flavor of Jello pudding.
Trust the text and words, when it comes to coupons.
Learn about the other parts of a coupon here.