Modifiers matching passage:

• physical,
• hollow,
• linear,
• clear,
• narrow,
• delicate,
• indoor,
• restricted,
• natural,
• related,
• long,
• vascular,
• pedestrian,
• written,
• thin,
• biological,
• tubular,
• underground,
• aerodynamic,
• transient,
• vertical,
• curved,
• small,
• open,
• closed,
• smaller,
• respiratory,
• internal,
• instrumental,
• complex,
• fluid,

Simple categories matching curved:

• vessel,
• body,
• object,
• outline,
• surface,
• structure,
• work,
• feature,
• scene,
• passageway,
• section,
• shape,
• part,
• substrate,
• construction,
• frame,
• figure,
• electrode,
• line,
• piece,
• space,
• fruit,
• boundary,
• item,
• form,
• hull,
• solid,
• side,
• element,
• area,
• glass,
• entity,
• article,
• portion,
• manner,
• elements,
• bottom,
• wall,
• bone,
• pattern,
• opening,
• end,
• region,
• plate,
• reflector,
• passage,
• shock,
• face,
• image,