[{"Bold_text": "adjective", "List Items": ["having the component parts closely compacted together; crowded or compact:a dense forest;dense population.Synonyms: impenetrable , teeming", "stupid; slow-witted; dull.", "intense; extreme:dense ignorance.", "relatively opaque; transmitting little light, as a photographic negative, optical glass, or color.", "difficult to understand or follow because of being closely packed with ideas or complexities of style:a dense philosophical essay.", "Mathematics.of or relating to a subset of a topological space in which every neighborhood of every point in the space contains at least one point of the subset."]}]