Category Nuances for cerium:

• radioactive,
• single,
• powdered,
• trivalent,
• heavy,
• metallic,
• reactive,
• new,
• rare,
• metal,
• refractory,
• significant,
• radiopaque,
• inorganic,
• unusual,

Simple Categories for cerium:

• system,
• metal,
• atom,
• element,
• quantity,
• component,
• material,
• solute,