This is a list of bends. A bend is a knot used to join two lengths of rope.
The common reef knot (square knot) is sometimes mistakenly tied as a bend. When used as a bend rather than a binding knot, the reef knot will capsize under sufficient tension. For this reason, the reef knot is insecure as a bend and as such is not listed as one.
Employed as a binding knot, to reef and furl sails or to tie up parcels, [the reef knot] is invaluable. But employed as a bend […], the reef knot is probably responsible for more deaths and injuries than have been caused by the failure of all other knots combined.