Corduroy rib is a type of fabric that has a unique texture and appearance. It is made up of a series of ridges, or wales, that are woven together to create a RIDGED pattern. The term 'WALE' refers to the number of ridges in the fabric, with four-WALE corduroy being the most common. The term 'RIDGE' refers to the raised portion of the fabric, and 'ridges' refers to the ridges that run along the length of the fabric. The combination of these elements creates a ribbed effect that is both visually appealing and comfortable to wear.