abysm, abyss, act, acting, action, activism, activity, agency, bank, behavior, chasm, clockworks, coal mine, colliery, conduct, dig, diggings, direction, doing, drive train, driving, employment, excavation, execution, exercise, function, functioning, gear, gold mine, gulf, handling, innards, machinery, management, manipulation, mechanism, mine, motion, movement, movements, occupation, open cut, opencast, operancy, operation, operations, performance, performing, pit, play, power train, practice, praxis, quarry, responsibility, running, servomechanism, shaft, steering, swing, watchworks, well, wheels, wheels within wheels, work, working, works