Modifiers matching cavity:

• peripheral,
• underground,
• anatomical,
• natural,
• large,
• available,
• artificial,
• internal,
• over,
• mucosal,
• subsurface,
• secretory,
• abdominal,
• small,
• hollow,
• micro,
• moist,
• negative,
• cardiac,
• intermediate,
• neighboring,
• uterine,
• major,
• pelvic,
• complex,
• vascular,
• deep,
• accessible,
• dark,
• organic,
• simple,
• closed,
• inner,
• interior,
• thoracic,
• adjacent,
• dead,
• thin,
• sensitive,
• tubular,
• nearby,

Simple categories matching hollow:

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