(a) With verbs implying motion: to a lower place, down, downward; also fig.; (b) with verbs implying rest: at a lower place, below, down; also fig.; (c) with verbs of looking, etc.: downward; casten……
(a) With verbs of motion: from higher to lower, downward; -- often with of; (b) with verbs of bending, looking, etc.: down, downward; (c) in expressions of extending, hanging, etc.: down, downward……