A knotted stitch is any embroidery

Embroidery

Embroidery is the art or handicraft of decorating fabric or other materials with needle and thread or yarn. Embroidery may also incorporate other materials such as metal strips, pearls, beads, quills, and sequins....

 technique in which the yarn or thread

Yarn

Yarn is a long continuous length of interlocked fibres, suitable for use in the production of textiles, sewing, crocheting, knitting, weaving, embroidery and ropemaking. Thread is a type of yarn intended for sewing by hand or machine. Modern manufactured sewing threads may be finished with wax or...

 is knotted around itself. Common knotted stitches

Embroidery stitch

In everyday language, a stitch in the context of embroidery or hand-sewing is defined as the movement of the embroidery needle from the backside of the fabric to the front side and back to the back side. The thread stroke on the front side produced by this is also called stitch...

 include French knots and coral stitch. Knotted stitches can be subdivided into individual or detached knots, continuous knotted stitches, and knotted edgings.

Applications

Individual knots are often found used as detached filling stitches.

Knotted edgings are used as a decorative trims, and can also be used to fill open spaces in cutwork

Cutwork

Cutwork or cut work is a needlework technique in which portions of a textile are cut away and the resulting "hole" is reinforced and filled with embroidery or needle lace.Cutwork is a related to drawn thread work...

 and in needlelace.

Detached knots

Individual knots include:

• French knot
• Bullion knot
• Four-legged knot stitch
• Turk's head knot

Continuous stitches

Knotted stitches include:

• Ceylon stitch
• Coral stitch or coral knots
• Zig-zag coral stitch
• Double knot stitch
• Knotted cable chain stitch, a knotted variant of cable chain stitch
  Chain stitch
  Chain stitch is a sewing and embroidery technique in which a series of looped stitches form a chain-like pattern. Chain stitch is an ancient craft - examples of surviving Chinese chain stitch embroidery worked in silk thread have been dated to the Warring States period...
  
  

Knotted edgings

Knotted edgings include:

• Antwerp edging
• Armenian edging
• Hollie stitch