Textures can increase interest to a room by adding variety without changing color or value. Keeping a room monochromatic, by using a variety of textures rather then colors with create a calm quiet room.
A motif repeating itself produces a pattern. A pattern requires repetition, the more it repeats the stronger the pattern is. A pattern with variation (where it repeats less) makes it more interesting to the eye. Patterns are more noticeable then textures, making them a strong element for controlling attention.
A tactile texture is one that can be felt, such as an interwoven velvet drape, or a wall with a rough sand stone finish. Visual texture, however, is an illusion; giving the apperance and variation on a smooth surface. Counter tops often have visual texture and glazed walls.
