Greases are semi-solid lubricants made from a combination of base oils, thickening agents, and additives. They are designed to reduce friction between moving parts, protect against wear, and prevent corrosion. Commonly used in machinery, automotive applications, and household items, greases help ensure smooth operation and extend the lifespan of components. The thickening agents in greases can be made from various materials, including lithium, calcium, or polyurea. These agents give greases their consistency and help them adhere to surfaces. Additives may include antioxidants, anti-wear agents, and corrosion inhibitors, enhancing the performance and durability of the grease in different environments.