Modifiers matching price:

• special,
• metal,
• changing,
• affordable,
• stable,
• world,
• official,
• crucial,
• regulated,
• basic,
• precious,
• agricultural,

Simple categories matching regulated:

• contamination,
• business,
• chemical,
• material,
• substance,
• property,
• pollutant,
• waste,
• process,
• metal,
• market,
• activity,
• worker,
• profession,
• event,
• contaminant,
• particle,
• utility,
• item,
• area,
• drug,
• constituent,
• professional,
• institution,
• component,
• sector,
• entity,
• group,
• hydrocarbon,
• organization,
• price,
• industry,
• unit,
• body,
• fluid,
• commodity,
• compound,