In Contrary to the nubuck, the inner layer of the calfskin (or other animal skins) are used to make the Suede. The suede is also sanded from the inner side of the leather allowing a naturally smoother and cleaner product than the nubuck. But as mentioned above this also implies that when compared to nubuck, suede is not as resistant.
Many believe that suede will be damaged if wet. Although it is not advised to expose suede to too much water, your suede shoes won’t be ruined if wet. If you can, avoid going out with suede on the rainy days, but if you do, don’t worry your shoes will survive just fine. In fact suede does not require much maintenance, treating your suede shoes with water proofing products and brushing them regularly with a suede brush (the soft bristles, never the wire) to maintain the nap, the actual fibres that gives suede its character, will be enough.