Modifiers matching misconception:

• popular,
• major,
• significant,
• legal,
• common,
• unnecessary,
• dangerous,

Simple categories matching unnecessary:

• procedure,
• activity,
• service,
• task,
• treatment,
• toy,
• expense,
• surgery,
• therapy,
• radiation,
• intervention,
• test,
• measure,
• interference,
• thing,
• stuff,
• exertion,
• information,
• practice,
• misconception,
• medication,