Modifiers matching cavity:

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

Simple categories matching secretory:

• gland,
• organs,
• tissue,
• unit,
• fluid,
• compartment,
• protein,
• organelle,
• component,
• structure,
• cavity,
• system,
• enzyme,
• cell,