Achilles Tendon Pain Causes & Risk Factors. As a type of tendonitis, Achilles pain involves inflammation of the soft tissue surrounding muscles and bones. A tendon is a flexible band of fibrous tissue that connects muscles to bone. Tendons work by allowing the pulling movement of muscle to lift a bone in order to cause movement.
Polish coast of the Baltic Sea. Abrasion is the mechanical scraping of a rock surface by friction between rocks and moving particles during their transport by wind, glacier, waves, gravity, running water or erosion. After friction, the moving particles dislodge loose and weak debris from the side of the rock.
The definition of abrasive is something that is harsh or rough, often to an unpleasant degree. An example of abrasive is the attitude of your boss who is always short tempered and yelling at you.