Simple categories matching semirigid:

• foam,
• metal,
• surface,
• material,
• elastomer,
• adhesive,
• object,
• panel,

Members with property semirigid:

• cardboard,
• wood,
• floor,
• bristol_cardboard,
• cardboard_panel,
• rigid_material,
• hard_rubber,
• nylon,
• urethane,
• plastic_material,
• instrument-panel_bezel,
• paper,
• trim_panel,
• polystyrene,
• cd,
• instrument,
• resorcinol,
• heavy_leather,
• twisted_paper,
• pvc,
• corrugated_cardboard,
• wall,
• plastic_composition,
• parchment,
• expanded_polystyrene,
• urethane_foam,
• leather,
• table,
• aluminum,
• polyethylene,
• dvd,
• ceiling,
• urea,
• rubber,
• ceramic_decal,