Adhesive or glue's a compound in a liquid or semi-liquid state that adheres or bonds items together. Adhesives may come from either natural or synthetic sources. Some modern adhesives are extremely strong, and are becoming increasingly important in modern construction and industry. The types of materials that can be bonded using adhesives's virtually limitless, but they're especially useful for bonding thin materials. Adhesives usually require a controlled temperature to cure or set. They can… (More on Adhesive)