Pile driver is a heavy machinery used in construction to drive piles into the ground. However, there are several synonyms for the term that can be used interchangeably. For instance, pile hammer is a synonym that refers to a tool that drives piles into the ground using energy that is delivered by a weight falling vertically. Other synonyms for pile driver include pile driver hammer, pile driving machine, and hammerhead crane. Additionally, a vibratory hammer is another type of pile driver that uses a vertical vibration and downward force to drive piles into the soil. Irrespective of the synonyms used, all of them perform the same function, which is to drive piles into the ground for construction purposes.