Compass

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axis = an imaginary line about which a body rotates

pivot = the central point, pin, or shaft on which a mechanism turns

gimbal = a device with a circular part that turns around a fixed central axis, used for keeping a compass, camera, or other piece of equipment in position when it is inside a moving vehicle or object

EFL subset that concentrates more on language in context than on grammar and language structures. It covers topics from accounting or computer science to tourism and business management. "Specific" means the studying through a field that is already known and relevant to a student.