Which tool would you use to drive a nail into a wall?

Explanation

A hammer is a tool made out of a head mounted onto a handle. The most common use is for driving nails of various kinds. It can also be used for breaking up objects. There are many different kinds of hammers in different sizes and with different purposes. The hammer may be the oldest tool for which definite evidence exists. You may argue that it is even older than man himself because some animals use stone and other materials to break things with.