The untied part of the rope used to tie knots and opposite the initial bight.
Ends is often used in place of the singular ‘end’ because shibari rope is tied doubled over resulting in two ends being used as only one.
In initial anchoring knots such single columns, the bight is often the active end of the rope, but the term "working ends" will still apply to the ends opposite the bight.
In normal rigging terminology the working end is the end tying the knot and is opposite the Standing End .