Today’s carpet offers much more than a conventional loop pile. To add to a room’s sophistication and interest, consider choosing a textured pattern. New technology can produce multilevel loop and cut/loop patterns. Choose diamonds, bows, pin dots, or fleurs-de-lis designs that "pop out" in sculptured effects. The texture, colors, and pattern of the carpet can be made to complement or contrast with patterns of your furniture and window treatments. Using a solid color, textured carpet is a great way to provide interest and pizzazz, without going to a multicolor, overall pattern.
Textured styles also fit well with today’s active and casual lifestyles. Textured carpet can be created through the use of several construction techniques. Many of these styles are known for their soil-hiding ability.
Cut pile: Loops are cut, leaving individual yarn tufts. Still one of today's most popular constructions, its durability is achieved with factors including the type of fiber, density of tufts, and the amount of twist in the yarn.
Plush / Velvet -- Smooth, level surfaces; formal atmosphere, "velvet."
Saxony -- Smooth, level finish, but pile yarns have more twist so that the yarn ends are visible and create a less formal look. Minimizes foot prints.
Friezé -- In this cut pile, the yarns are extremely twisted, forming a "curly" textured surface. This informal look also minimizes foot prints and vacuum marks.
Level loop pile: Loops are the same height, creating an informal look. It generally lasts a long time in high-traffic areas. Many of today’s popular Berber styles are level loop styles with flecks of a darker color on a lighter background.
Multi-level loop pile: Usually has two to three different loop heights to create pattern effects, providing good durability and a more casual look.
Cut and loop pile: Combination of cut and looped yarns. Provides variety of surface textures, including sculptured effects of squares, chevrons, swirls, etc.
All information taken from Carpet & Rug Institute