coin (a piece of hard material usually in the shape of a disc, issued as a form of money)
item of jewellery (a personal ornament, such as a necklace, ring or bracelet, made from gemstones, precious metals or other materials)
Which entity (any object at all, conceptual or physical) is made of (composed of) nickel, a chemical element, with the chemical symbol Ni and atomic number 28?
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