Abrasion is a term to describe wet processors (laundries) try to make garments look worn or faded by scraping or rubbing the surface of the fabric causing abrasion. Pumice stones are most frequently used. (see stone washing).
Abrasion resistance is a term used to determine the degree to which loss of appearance through surface wear, rubbing, chafing, and other frictional actions are withstood. The abrasion resistance degree is determined by a test method.
Fabric density Eco-Fashion Encyclopedia
Natural fibres are any hair-like raw material directly obtainable through an animal, vegetable, or mineral source that can be convertible, after spinning, into yarns and then into woven cloth.