Abrash - A graduated or transitional change in the color of a rug - seen as darker or lighter striations of hue/value - due to differences in either the wool or dye batch.

All-over design - A term used to describe a rug without a central medallion but with a design repeated throughout the field.

Antique Finish/Wash - a chemical soaking process designed to to simulate aging by modifying color saturation and intensity

Arabesque - Ornate curving design featuring intertwined floral and vine figures - often seen in intricate workshop rugs such as those from Tabriz, Isfahan, Nain and Qum.

Art Silk - Also called artificial silk - refers to the use of processed (mercerized) cotton as a substitute for silk.

Aubusson (Aubuson) - These fine flat-woven carpets, featuring formidable sized rugs in pastel colors with floral medallions, were produced in France from the 15th - 19th centuries.

Axminster Rug (Loom) - First produced in the 1880's, machine-made rugs were mechanically woven to a flexible cotton frame and having up to 70 colors of wool.

Baktiari (Bakhtiari) - Named for the Iranian tribal peoples who produced them - rugs noted for durable construction, typically featuring a repeated square-grid motif with a floral detailing in each grid.

Border Rug - A rug featuring a design on the outer rim, or border, of the rug, surrounding the field.

Boteh - A pear-shaped figure often used in oriental rug designs characteristic of the paisley pattern The boteh may represent a leaf, bush or a pinecone.

Broadloom - Carpet(s) produced in widths of at least 6'.

Brocade - Weft float weave used to add design and embellishment. Often seen on the kilim bands at the ends of oriental rugs.

Cartouche - Oval-shaped ornament incorporated into the rug design containing a signature, date, or inscription.

Carved Pile/(Map) - Design or pattern cut or "embossed" into the pile of a rug - common in Chinese and Tibetan carpets.

Chain Stitch - A crochet stitch used in rug construction that consists ol successive loops to lock the final weft in place at the end of a rug.

Dhurrie - A flatwoven rug from India, usually made of cotton or wool.

Endless Knot - A Buddhist emblem symbolizing long duration often used with other symbols.

Flat-Weave - term describing any rug without (wool) pile: including Soumaks, Kilim, Verneh, Sozani, and Dhurie. (Aubuson carpets, though flat, are excluded from this category due to factors such as their complexity)

Field - The part of a rug's design surrounded by the border. The field may be blank or contain medallions or an over-all pattern.

Fringe - Warps extending from the ends of a rug which are treated in several ways to prevent the wefts and knots from unravelling.

Gabeh - A long-piled rug style with a simple colorful design - originally used as mattresses - that have attained recent popularity.

Gul - A medallion either octagonal or angular in shape used in Turkoman designs It is often repeated to form an all-over pattern in the field.

Handmade Rug - A rug that is either entirely handknotted (or handtufted) and usually made of wool, and which may also include the addition of silk.

Herati - Design type found in Persian carpets featuring the repeated pattern of four pinecone or leaf-like figures woven around a diamond shape - an effect sometimes noted to resemble a fish-like motif.

Heriz - City on Iran-Azerbaijan border and name for the geometric medallion rugs popularized in the early 20th century. This design remains extremely popular in Europe and the U.S.A.

Hooked rug - A hooking device pushes and loops yarn through a canvas producing either a loop hook or latch hook rug (also the loops can be sheared to create an open pile).

Jufti Knot - A 'False' knot, either Turkish or Persian, which is tied onto four warp threads instead of the normal two. This time-saving knot lessens the quality and the amount of material in a rug.

Kashmir - Upscale carpets made of either silk or mercerized cotton from the Islamic region of India - woven with a Persian knot.

Kazak - Referring to the Turkish-style rugs produced by the peoples of Kazakhstan and of that region.

Kilim - A flat-woven (pileless) carpet, often reversible, in which a design pattern is formed by colored weft strings being wrapped around the warp.

Knap - the brush-like surface of the rug, created when the knot loops are cut.

Knot - the basic technique used to create an Oriental carpet: Two types of knots are used:

• The Persian Senneh knot is a fine, assymetrical knot used in relatively complex carpets, giving them a "light" and a "dark" side.
• The Turkish Ghiordes knot is symmetrical and gives a rug a deeper, longer-wearing pile.

Knot count - In the process of making a hand knotted rug, each strand of yarn is knotted to the foundation: The higher the number of knots per square inch - the higher the quality of the rug.

Knotted - Process by which a rug is hand woven with wool (or silk) and secured to a cotton foundation by knotting - thus producing a rug of superior quality. Such a rug could be classified as "knotted", "hand-knotted", "hand-woven" or "hand-made"(handmade). Factors that may affect or increase value/cost are the density of the pile (knots per square inch) as well as the intricacy of the design motif.

Line Count - The number of horizontal knots per linear foot. (As with knot count, the higher the number, usually the higher the quality of the rug).

Medallion - Large design element located in the very center of the rug's field - the hallmark of the traditional, symmetrical Oriental area rug. In rugs with an All-over design or a random or contemporary design format a medallion will not be displayed.

Mori - The weaving technique of certain Pakistani and Indian rugs.

Natural rug - Often refers to an earth-toned rug whose texture - sisal, jute or wool - is the identifying feature.

Oriental - referring to an Oriental rug or carpet:

• ". . . handmade of natural fibers (most commonly wool or silk), with a pile woven on a warp and weft, with individual character and design made in the Near East, Middle East, Far East, or the Balkans."
   

Overcasting - The technique of rounding the wool edges of the vertical sides of a rug to prevent fraying.

Patina - Term referring to the "mellowed" surface appearance of a rug - due to age or use.

Persian Knot - Looped around one thread with only a halt-turn around the other thread.

Pile - The nap of the rug or the tufts remaining after the knotted yarns are dipped.

Pile weave - The structure of knotted carpets and rugs forming a pile or nap: Wool, silk, (sometimes cotton) is knotted around the warp in a variety of techniques.

Plain Weave - The simplest interfacing of warp and weft.

Prayer Rug - Typically small, this rug features an arch motif at the top of the field - either geometric or curvilinear - depending on where it was woven.

Runner - A long, narrow rug, usually under 3 feet wide, primarily used in hallways and on staircases.

Sarouk - Woven carpets produced in Sarouk region of Iran renowned for their beauty. Frequently seen in lobbies of fine American hotels and estates in post-WW2 era.

Savonerie - The class of beautiful impressionist-quality pile carpets, made until 1890 in France, that have a similar appearance to Persian Kermans.

Selvage - The area between the edge of a rug and the fringe.

Soumak - A flatwoven rug made from a technique that produces a herringbone effect.

Tapestry - Generic term referring to a flat-woven wall hanging characterized by rich pastoral design settings.

Tapestry Weave - Any variety of weaves where the pattern is created by ground wefts that do not run from end to end.

Tea Wash - A procedure used to soften the colors in order to give a rug the appearance of age.

Tribal rug - A term used interchangeably with gabbeh to describe a primitive-looking or Southwestern rug.

Tufted - A process in which tufts of wool are punched through a base fabric. The underside of the base is then painted with Latex glue and covered with a backing material.

Turkish Knot - Tied around two adjacent warp threads.

Warp - Comprising the structure parallel wrap yarns run the length of the rug and are interlaced with wefts.

Weft - The yarns woven horizontally through the warps.

Weft-Faced - A rug where the weft yarns are more closely spaced than the warps.

Yarn Ply - Number of single strands of yarn that are twisted together to form a plied yarn.