Category Nuances for concrete_structure:

• artificial,
• stationary,
• structural,
• massive,
• durable,
• solid,
• old,
• porous,
• physical,
• aggregate,
• awkward,
• metallic,
• exterior,
• refractory,
• concrete,
• civil,

Simple Categories for concrete_structure:

• ground,
• measure,
• building,
• surface,
• structure,
• object,
• piece,