Category Nuances for null:

• supplementary,
• active,
• alternative,
• therapeutic,
• costly,
• conventional,
• popular,
• holistic,
• passive,
• preventative,
• supportive,
• medical,
• expensive,
• natural,
• healing,
• conservative,
• additional,

Simple Categories for null:

• treatment,
• choice,
• service,
• option,
• work,
• care,
• intervention,
• measure,