Page 28 - Knots You Need to Know Easy-to-Follow Guide to the 30 Most Useful Knots

The end of the rope being used for knotting is the working end. A bight is
any slack section in the middle part of the rope. The standing part is the
main part of the rope, or that section of the rope about which the end is
turned to form a knot, hitch, etc.

A loop is a bight that forms at least a half circle. Bringing the end parts
near each other forms a closed loop; leaving them apart makes an open
one.

When the ends of a loop are crossed, the rope is said to have taken a
turn. If the end is passed over the standing part, it is an overhand turn,

and if passed under the standing part, it is an underhand turn.