What is the difference between the review system und the trustmark?

Online shops can use Trusted Shops in three different ways:

• Trustmark and reviews
  Online shops with the trustmark and reviews are certified and use the Trusted Shops review system. When shopping at online shops with trustmark and reviews, you benefit from both the Buyer Protection, thanks to which you can make purchases in a safe way, and the reviews, enabling you to get an idea of the experience other customers’ have made with the shop.
• Trustmark only
  Online shops with the trustmark have been certified by Trusted Shops and enable you to make purchases in a safe way by offering you the Buyer Protection.
• Reviews only
  Online shops that only use the Trusted Shops review system have not been certified by Trusted Shops. This means that, as an online shopper, you benefit from authentic customer reviews, but the online shop can’t offer you the Trusted Shops Buyer Protection.