Earth-moving vehicles are machines used to move large amounts of earth, such as soil and rocks. Bulldozers and dozers are two of the most common types of earth-moving vehicles. A BULLDOZER is a large, powerful tractor with a metal plate at the front, used for pushing earth and other materials. A dozer is a type of BULLDOZER with a blade at the front, used for moving earth and other materials. Both bulldozers and dozers are essential pieces of equipment in construction, mining, and other industries.