The term weave is used normally to describe the structure of a woven fabric or the process of weaving which is usually carried out on a loom. Woven fabrics are constructed with two sets of interlacing warp and weftyarns. The warp yarns, or ends, are usually wound lengthwise on the loom, while the weft yarns, or picks, interlace the warp at right angles to produce the fabric.
There is a wide variety of weave constructions of which tabby is the most common. The main reason for changing the structure of a cloth, by the use of a particular weave, is to achieve the best combination of weight and cover for the eventual weight of the fabric.