The word moiré comes from the French word for "watered". In English, it originally referred to the shimmering quality of the French moiré silk. A moiré pattern occurs when two or more different geometrically regular patterns are superimposed. A classic moiré pattern is composed of two sets of parallel lines that are at a slight angle. You can see this effect in real life if you go past two fences located one behind another. A moiré pattern does not necessarily have to be composed of lines. It can also be composed of circles, dots or any other repetitive pattern, consist of multiple colours, and be either moving or still. The essential quality of a moiré pattern is that a new pattern emerged from two existing ones. Often the new pattern seems to resonate or implies a depth not seen in the patterns individually.

Float
A float is created when a warp or weft ‘yarn’ is passed over two or more threads.
Shed
A shed is the opening created on a loom where the weft passes between the warp ‘yarn’.
Pick
A pick (also referred to as a shot) is a single pass of the weft through the ‘shed’.
Ends
Individual warp threads.
Yarn
Yarn is the generic term for a thin, long, continuous strand of textile fibre, filament, or material in a form suitable for knitting, weaving, or otherwise intertwining (or interlacing) to form a textile fabric.