[{"Bold_text": "noun", "List Items": ["the state or a space in which a gas, usually air, is contained at a pressure greater than atmospheric pressure.", "a full assembly, as a joint legislative assembly.", "a space, usually above a ceiling or below a floor, that can serve as a receiving chamber for air that has been heated or cooled to be distributed to inhabited areas.", "the whole of space regarded as being filled with matter ( vacuum )."]}]