Category Nuances for collector:

• recreational,
• perceived,
• private,
• thermal,
• trusted,
• major,
• concerned,
• interested,
• internal,
• solar,
• special,
• civilian,
• conventional,
• marginal,
• bigger,
• industrial,
• functional,
• old,

Simple Categories for collector:

• individual,
• user,
• hardware,
• plant,
• system,
• thing,
• structure,
• unit,
• equipment,
• entity,
• worker,
• item,
• danger,
• owner,