well, im glad you asked that question
modeling is the construction of a model, or should i say a form. for instance, a model can be anything from a bipedal human, to some creature you make up in your head that doesnt really have a classification. it involves shaping "primitives" ie. cylinders,boxes etc, into more complex shapes, like legs and heads for example.
the place in between modeling and skinning would be skinmapping. which is the process of identifying which vertecies (points) on the model relate directly to the skin. kind of like co-ordinates on a map you would use to find ur way somewhere.
skinning is the process in which you actually put a texture on the model. give it colour, a lot of depth is given to a model using shading and highlighting of the skin.
as you can see, my model is plain. after it is skinned or textured, you would see visible differences between the skin, the clothes, the eyes etc.
hope that clears up any questons
and i hope i dont get told off for spamming
and i have no more updates on this model im affraid, im much too busy working on a mod. feel free to visit the forum, link is in my sig!