The difference is in the manufacturing process: Nubuck is created
by a process of brushing/sanding the outside of leather to roughen
the surface; Suede on the other hand, is where the inside of the
leather is brushed/sanded. The result of which is that Nubuck is
tougher and more resilient to stains and scuffs. Nubuck is usually
more expensive to produce than Suede, but it should last longer.
On looks alone, you may find it difficult to differentiate between
the two materials. You may also be wondering what animals are Nubuck
and Suede made from: generally it is the hide of a sheep/lamb, cow/calf,
goat, or deer. When maintaining suede and nubuck, it is important
to pick the correct brush for each; because nubuck is a more harder
material, a nubuck brush could damage suede, and a suede brush may
have little effect on nubuck.