A hammer is a tool that strikes an object to make it move or deform. It is most commonly used to hammer nails, correct or break objects. Hammers come in many forms. The most common forms are a handle, a handle, and a top.
One side of the top is flat for hammering, and the other is hammerhead. The hammer head can be shaped like a ram's horn or a wedge and is used to pull out nails. There are also hammer heads with rounded heads.