- Further information: List of knot terminology
The list of knots is extensive, but common properties allow for a useful system of categorization. For example, loop knots share the attribute of having some kind of an anchor point constructed on the standing end (such as a loop or overhand knot) into which the working end is easily hitched to using a round turn. An example of this is the bowline. Constricting knots often rely on friction to cinch down tight on loose bundles; an example is the Miller's knot. Knots may belong to more than one category.
- A knot uniting two lines (for knots joining two ends of the same line, see binding knots or loops). List of bends.
- A knot that restricts object(s) by making multiple winds. List of binding knots.
- Knots used to tie up lines for storage. Another handy coil is here.
- Decorative knot
- A complex knot exhibiting repeating patterns often constructed around and enhancing an object. List of decorative knots.
- A knot tied to a post, cable, ring, or spar. List of hitch knots.
- A knot used to hold (usually) poles together. List of lashing knots.
- A knot used to create a closed circle in a line. List of loop knots.
- Plait (or braid)
- A number of lines interwoven in a simple regular pattern. List of plait knots.
- Slip (or running)
- A knot tied with a hitch around one of its parts. In contrast, a loop is closed with a bend. While a slip knot can be closed, a loop remains the same size. List of slip knots.
- Some knots may be finished by passing a bight rather than the end, for ease of untying. The common shoelace knot is an example, being a reef knot with both ends slipped.
- A knot used to hold two lines or two parts of the same line together. List of seizing knots.
- A number of lines interwoven in a complex pattern. See also Chain sinnet.
- A knot formed by interweaving strands of rope rather than whole lines. More time-consuming but usually stronger than simple knots. List of splices.
- A knot tied to hold a line through a hole.
- A knot that is used as part of a magic trick, a joke, or a puzzle. List of trick knots.
- A binding knot used to prevent another line from fraying.
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