The bullnose plane is a plane in which, like a rebate or a shoulder plane, the blade extends, therefore cuts, to the full width of the tool. The bullnose plane is used to trim the shoulders and faces of tenons. It is used when it is necessary to trim right into the concave corner where two surfaces of the same piece of wood meet perpendicularly. It is also commonly used to clean up dadoes (housings) and tenons for joinery.
Unlike the rebate plane, the bullnose plane can cut end grain and has a lower bed angle while the blade is set bevel up.