Coal and ice are two contrasting entities with respect to their properties, composition and usage. Antonyms for coal include words like hydroelectricity, solar, wind, and nuclear energy, which are all sources of renewable energy. Conversely, ice antonyms could be warmth, heat, and hot weather, indicating that ice is associated with cold temperatures. Usage-wise, coal is typically used as a non-renewable fuel source for energy production, whereas ice is used to preserve food and beverages or to cool down indoor temperatures. By understanding the antonyms for coal and ice, we can recognize their differences in terms of their characteristics and how they are applied in various contexts.