magnet can be used for separating a magnetic material from a mixture of a magnetic and nonmagnetic material
magnet is magnetic_device. magnetic_needle is magnet. magnetic_stripe is not magnetic_tape. electromagnet is magnet. magnetic_tape is magnetic_device. magnet is not magnetic_device. paramagnet is magnet. electromagnet is not magnet. magnetic_stripe is magnetic_tape. magnetic_needle is not magnet.