Which type of nails includes brads and finishing nails, and are designed to fit flush with the surface of wood?

Brads and finishing nails are specifically designed to be used in woodworking projects where a smooth, flush finish is desired. These types of nails have small heads and thinner bodies compared to other nail types, allowing them to sink into the wood surface without creating a noticeable bulge. This feature is particularly useful when working on trim, moldings, or cabinetry, where aesthetic appeal is important.

Brads are often used for lighter applications and can be installed with a brad nailer, while finishing nails are slightly larger and provide more holding power for heavier materials. Both types can be driven below the surface, allowing for easy concealment with wood filler or paint, contributing to a refined look.