Viking, I prefer drop point to clip point.
The guys from british Blades would probably be better at describing it than I am and I don't tend to have examples of different types of knife at work.
This is a rough description,
A drop point is pretty much what it says on the tin, the back edge of the blade gently curves (drops away) with a convex curve towards the cutting edge. Thus the blade ends up with a slightly spear point shape.
With a clip point, the blade appears to have either a straightedge or a concave curve that slopes towards the point of the blade.
If I am wrong the guys from british blades will correct me, but I believe that this is pretty much what it is. :-D