[{"Bold_text": "noun", "List Items": ["a body so suspended from a fixed point as to move to and fro by the action of gravity and acquired momentum.", "Horology.a swinging lever, weighted at the lower end, for regulating the speed of a clock mechanism.", "something that tends to move from one position, condition, etc., to the opposite extreme and then back again:In a democratic society, the pendulum of political thought swings left and right."]}]