Screwdriver Nut Driver

screwdriver
A tool with a flattened, cross-shaped, or star-shaped tip that fits into the head of a screw to turn it
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a hand tool for driving screws; has a tip that fits into the head of a screw
A screwdriver is a tool for driving screws and rotating other machine elements with the mating drive system. The screwdriver is made up of a head or tip, which engages with a screw, a mechanism to apply torque by rotating the tip, and some way to position and support the screwdriver.
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nut driver
A nut driver is a tool for tightening nuts and bolts. It essentially consists of a socket attached to a shaft and cylindrical handle and is similar in appearance and use to a screwdriver. They generally have a hollow shaft to accommodate a shank onto which a nut is threaded.
(Nut, Driving) An internally threaded component that acts in conjunction with a screw to produce linear motion of the carriage, e.g., a rotating screw engaging with a fixed nut or a re-circulating ball nut.
A screwdriver like tool used to loosen and tighten threaded bolts or nuts.