meshes and bones in xna

[brainydexter]

I have been trying to learn the basics of 3d stuff in xna and I have read a lot of material, yet, I am still so muddled up between:
" Whats the difference between a mesh and a bone ?" Further down the line, a basic question: "what is a mesh and what is a bone ?".

From what I understand, mesh is a set of vertices, which the model is made up of. Bones is something like the armature of the model. But, when I compile the code and run in XNA, the Model class treats them in a different manner, I think. Thus, somebody please clear this stuff for me.

Thanks

[brainydexter]

This blog post @ Shawn Hargreave's site says it all.