Knitting is one of the processes for using yarn to create a textile or fabric.
The knitting process has multiple active stitches (that require a stitch to be pulled through them) at one time, as opposed to crochet that only has one active stitch.
The most common type of knitting is weft knitting. Weft knitting creates multiple loops of yarn, called stitches, in a line (called a row) or circle (called a round). The knitter adds a new stitch to the row/round by pulling a loop of yarn through a loop from the prior row, securing the new stitch, and releasing the stitch from the prior row. Variations on creating stitches include making a new stitch through multiple stitches,
making multiple new stitches through the same stitch, twisting the loop of yarn in different ways, pulling the new stitch through the prior stitch in a different direction, and making the row/round of stitches in a different order than the prior row/round.
The most common forms of weft knitting currently are machine and two-needle hand knitting.
Different types of yarns (fibre source, thickness, twist, and colours), needle sizes, and stitch types may be used to achieve knitted fabrics with diverse properties (colour patterns, texture, weight, heat retention, water resistance, and strength).