In textile

Textile

A textile or cloth is a flexible woven material consisting of a network of natural or artificial fibres often referred to as thread or yarn. Yarn is produced by spinning raw fibres of wool, flax, cotton, or other material to produce long strands...

s, pile is the raised surface or nap

Nap (textile)

Primarily, nap is the raised surface on certain kinds of cloth, such as velvet. Nap can refer additionally to other surfaces that look like the surface of a napped cloth, such as the surface of a felt or beaver hat....

 of a fabric

Fabric

A fabric is a textile material, short for "textile fabric".Fabric may also refer to:*Fabric , the spatial and geometric configuration of elements within a rock*Fabric , a nightclub in London, England...

, which is made of upright loops or strands of yarn

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...

. Examples of pile textiles are carpet

Carpet

A carpet is a textile floor covering consisting of an upper layer of "pile" attached to a backing. The pile is generally either made from wool or a manmade fibre such as polypropylene,nylon or polyester and usually consists of twisted tufts which are often heat-treated to maintain their...

s, corduroy

Corduroy

Corduroy is a textile composed of twisted fibers that, when woven, lie parallel to one another to form the cloth's distinct pattern, a "cord." Modern corduroy is most commonly composed of tufted cords, sometimes exhibiting a channel between the tufts...

, velvet

Velvet

Velvet is a type of woven tufted fabric in which the cut threads are evenly distributed,with a short dense pile, giving it a distinctive feel.The word 'velvety' is used as an adjective to mean -"smooth like velvet".-Composition:...

, plush

Plush

Plush is a textile having a cut nap or pile the same as fustian or velvet.Originally the pile of plush consisted of mohair or worsted yarn, but now silk by itself or with a cotton backing is used for plush, the distinction from velvet being found in the longer and less dense pile of plush...

, and Turkish towels.. The word is derived from Latin pilus for "hair

Hair

Hair is a filamentous biomaterial, that grows from follicles found in the dermis. Found exclusively in mammals, hair is one of the defining characteristics of the mammalian class....

"

The surface and the yarn in these fabrics also called "pile". In particular "pile length" or "pile depth" refer to the length of the yarn strands (half-length of the loops).

The types of pile include

• loop pile (uncut pile)
• cut pile
• knotted pile
• tufted pile
• woven pile
• cord pile
• twist pile