The term 'Damaged by Long Use' can be summarized by two crossword solutions: WORN and WEAR. WORN is an adjective that describes something that has been used for a long period of time and is now showing signs of WEAR and tear. WEAR, on the other hand, is a verb that describes the process of something being used over a long period of time, resulting in it becoming damaged or WORN out. Both words are used to describe the effects of long-term use on an object.