Simple categories matching contiguous:

• surface,
• structure,
• wall,
• organs,
• region,
• polygon,
• area,
• file,

Members with property contiguous:

• orbit,
• whole_watershed,
• brain,
• lens,
• trachea,
• forehead,
• trace,
• mediastinum,
• visual_pathway,
• vessel,
• triangle,
• hand,
• thoracic_cavity,
• pasture,
• larynx,
• wall,
• communications_zone,
• pharynx,
• iris,
• cranial_cavity,
• cavernous_sinus,
• school,
• side,
• subdivision,
• dental_plaque,
• sinus,
• connective_elements,
• formulation_building,
• rib,
• heart,
• williams_addition,
• ceiling,
• pulmonary_valve,
• paranasal_sinus,
• audio_file,
• pulp,
• street,
• eye,
• contiguous_area,
• habitat,
• bottom_wall,
• countertop,
• airway,
• globe,
• naris,
• disc,
• wrist,
• sympathetic_ganglion,
• parallelogram,
• bronchus,
• floor,
• hexagon,
• gastric_reservoir,
• ground,
• watershed,
• bones,
• tracheal_wall,
• partition_wall,
• intracranial_compartment,
• emerald_bay,
• diaphragm,
• ureter,
• brachial_plexus,
• pulmonary_artery,
• bladder,
• chest_wall,
• breast,
• aorta,
• vagina,
• cheek,
• abdominal_wall,
• inner_ear,
• landscape,
• azygos_vein,
• flood-control_district,
• esophagus,
• glass_slide,
• tricuspid_valve,
• anterior_tongue,
• low_country,
• storage_building,