Category Nuances for nuclear_waste:

• deadly,
• hazardous,
• complex,
• radioactive,
• threatening,
• difficult,
• underground,
• environmental,
• nuclear,
• remote,
• challenging,

Simple Categories for nuclear_waste:

• chemical,
• waste,
• mixture,
• space,
• substance,
• operation,
• contaminant,
• activity,
• material,
• object,