Demin cotton jeans and the fading that occurs with wear and washing.
Scuba gear nylon fabrics that become worn and faded after sunlight, imparting character and credibility.
Patina on metals, which can occur over time or be artificially generated with heat and chemicals. Bronze specifically.
Plastic deterioration, fading or structural degrading. Soft touch finishes from ten year old cell phones that have turned into sticky oily surfaces. Plastics that fall apart and become brittle.
One of the major film stock producers ran a series of billboards in Switzerland a decade ago. “The nicest moments in life don’t fade away” The billboard was printed in an ink that over the course of a month faded to nothing, the central photograph was the only thing remaining.
Wood. Leather burnishing.
COR-TEN steel used in outdoor sculptures and architecture. Weathering up to a point that develops a protective oxide (rust) layer and stops.
Glass formulations of fused quartz and sodium carbonate, which are attacked by moisture and essentially decay over short periods of time.