Nails have different shapes due to their various uses. The most common nails are called "wire nails". Other common nail names include pins, thumbnails or bent head nails. Nails are widely used in many scenarios. Rivets for general aircraft carriers are expensive, while ordinary nails are cheap.

In engineering, woodworking and construction, nails refer to sharp hard metal (usually steel) used to fix wood and other objects. Hammers drive nails into objects. [2] There are also electric nail guns and gas nail guns. Nails, therefore, can stabilize objects by their deformation and by friction.