metallic has a nonmetallic dullness
metallic is not fabric. non_metallic_element_kind is element. oxygen is not non_metallic_element. aluminum is not metallic_element. metallic_conducting_medium is not solid_metal. metallic_color is not color. non_metallic_element_kind is not element. metallic is fabric. oxygen is non_metallic_element. metallic_element is not chemical_element.