Loop List of knot terminology

a: open loop, b: closed loop, c: turn, d: round turn, , e: 2 round turns

in reference knots, loop may refer to:

one of fundamental structures used tie knots. specifically, u-form narrower bight.
a type of knot used create closed circle in line.

a loop 1 of fundamental structures used tie knots. full circle formed passing working end of rope on itself. when legs of closed loop crossed form loop, rope has taken turn.