Category Nuances for coastline:

• fixed,
• natural,
• physical,
• coastal,
• vertical,
• exposed,
• geographical,
• complex,
• linear,
• looking,
• irregular,
• geologic,
• windy,
• real,
• fragile,
• solid,
• world,

Simple Categories for coastline:

• point,
• boundary,
• object,
• space,
• surface,
• outline,
• zone,
• location,
• land,
• formation,
• region,