[{"Bold_text": "noun", "List Items": ["the state or quality of being hard :the hardness of ice.", "a relative degree or extent of this quality:wood of a desirable hardness.", "that quality in water that is imparted by the presence of dissolved salts, especially calcium sulfate or bicarbonate.", "unfeelingness or jadedness; callousness .", "harshness or austerity, as of a difficult existence.", "South Midland U.S.ill will; bad feelings:There's a lot of hardness between those two boys.", "Mineralogy.the comparative ability of a substance to scratch or be scratched by another.Compare Mohs scale Mohs scale.", "Metallurgy.the measured resistance of a metal to indention, abrasion, deformation, or machining."]}]