Overhand Knot
It can also be used to prevent the end of a piece of rope unraveling.
Half Hitch
Tied with one end of a rope being passed around an object and secured to its own standing part with a Single Hitch
Half Knot
A binding knot, being the first movement of the Reef or Square Knot.
Square Knot (Reef Knot)
Take two ropes and cross them (red over blue) to form a half knot. Cross them a second time (red over blue again) and pull the ends tight to form the Square Knot.
Sheet Bend (Weaver's Knot)
Figure 8 (Flemish) Knot
Slip Knot
The knot can be used as temporary stopper knot.