The Linked Overhand Knots described on this page are considered "connection knots". This means their primary purpose is to link two cords together. They all have a raised appearance and are sometimes used to decorate cords instead of beads
The Matthew Walker knot is a unique design that features the Overhand Knot. This decorative knot can be used to prevent a twisted style cord from unraveling. You can also tie this Macrame knot using three or more cords, as I did in the example shown.