First of all: I merged your thread into the other one you started on this topic.

Secondly, a bit of an explanation of what exactly "damping" is.

Basically, a shock's sole purpose is to limit the motion of the spring. You have two forms of motion: compression and rebound. Compression is, rather simplistically, when the suspension is compressed. This happens when the body leans onto a side in a turn, you hit a bump, whatever. During compression, the spring stores up energy. After this energy is stored, the spring releases it and forces the suspension back down, hence we have rebound.

Now, compression damping is the ability of the shock to resist compression of the spring. Effectively this limits the amount of energy that is transferred into the spring. Instead of all the energy of the suspension being compressed being stored by the spring, the shock absorbs some of it.

Rebound damping is the opposite. The spring releases the energy it has stored up which pushes the suspension back out. The rebound damping of the shock absorbs some of the energy that is being released so that less of the energy is used to push back down on the suspension.