Modifiers matching viscera:

• fixed,
• surrounding,
• thoracic,
• abdominal,
• hollow,
• adjacent,
• ordinary,
• key,
• normal,
• deep,
• large,
• exposed,
• developing,
• nearby,
• solid,
• pelvic,
• major,

Simple categories matching hollow:

• handgrip,
• article,
• object,
• carrier,
• construction,
• structure,
• product,
• wall,
• item,
• area,
• part,
• piece,
• jewelry,
• dish,
• instrument,
• organ,
• viscus,
• passage,
• glassware,
• animal,
• beads,
• container,
• fiber,
• form,
• stem,
• receptacle,
• organs,
• tubing,
• feature,
• shaft,
• ware,
• section,
• vessel,
• body,
• pipe,
• conduit,
• ceiling,
• reed,
• space,
• particle,
• assembly,
• protuberance,
• pole,
• utensil,
• fibre,
• cavity,
• shell,
• formation,
• glass,
• bone,
• polyhedron,
• region,
• implement,
• needle,
• tissue,
• plant,
• tree,
• panel,
• surface,
• bird,
• material,
• wood,
• viscera,
• component,
• ball,
• shape,
• bones,
• thing,
• sphere,
• tube,
• cylinder,