Granny knot its possible use tying the necks of grain sacks. When attempting to tie a reef knot (square knot), it is easy to produce a granny knot accidentally. This is dangerous because the granny knot can slip when heavily loaded. A tightened granny knot can also jam and is often more difficult to untie than the reef knot. It is better to tie a reef knot in nearly all circumstances. One way to distinguish them is that in the reef knot each loop passes completely over, or completely under (not through) the neck of the other. The reef knot is commonly
Stopper knot Stopper knot A stopper knot (or simply stopper) is a knot that creates a fixed thicker point on an otherwise uniform thickness rope for the purpose of preventing unreeving: stopping the rope at that point from slipping out of a narrow passage. Stopper has three distinct meanings in the context of knotting and cordage. A decorative stopper knot may be referred to as a lanyard knot. A monkey's tail, "is a permanent or semipermanent stopper that is put in the bight as well as the end. It is also called single throat seizing, seized round turn, clinch, and pigtail...A small