A "tank" is a large, armored vehicle designed for combat. It moves on tracks and is equipped with powerful weapons, making it a key part of military operations. Tanks are built to withstand enemy fire and can traverse rough terrain, allowing them to support ground troops during battles. In addition to their military use, tanks can also refer to large containers for holding liquids or gases. For example, a water tank stores water for homes and farms, while a gas tank holds fuel for vehicles. Both types of tanks serve essential functions in everyday life and industry.