A "tank" is a large, armored vehicle designed for combat. It typically features a rotating turret, heavy armor, and tracks for mobility over rough terrain. Tanks are used by military forces to engage enemy troops and fortifications, providing both firepower and protection for their crew. In addition to military tanks, the term can also refer to a container for holding liquids or gases. For example, a water tank stores water for various uses, such as irrigation or drinking. Similarly, a gas tank holds fuel for vehicles, ensuring they can operate efficiently.