Simple categories matching accidental:

• event,
• occurrence,
• phenomenon,
• feature,
• characteristic,
• case,
• death,
• loss,
• release,
• discharge,
• contaminant,
• condition,
• losses,
• action,
• cause,
• fire,
• incident,
• disaster,
• sound,
• situation,
• property,
• trauma,
• signal,
• damage,
• noise,
• error,

Members with property accidental:

• leak,
• explosion,
• kitchen_fire,
• car_wreck,
• fire,
• railroad,
• chemical_explosion,
• theft,
• bow_squeak,
• deletion,
• user_damage,
• transport_accident,
• virus,
• collision,
• loss,
• passing_train,
• volume,
• black_death,
• leakage,
• wind,
• inundation,
• quality,
• texture,
• mold,
• aircraft_crash,
• storm,
• percussive_impact,
• weight,
• flow_blockage,
• car_accident,
• impact,
• water_damage,
• karaoke_fire,
• vandalism,
• due,
• ice_surge,
• economic_wellbeing,
• pipeline_failure,
• heating_devices,
• losses,
• human_mistake,
• sound,
• trip,
• break,
• flood,
• gas_explosion,
• blast,
• strangulation,
• giant,
• sneezing,
• strength,
• faulty_heating,
• disaster,
• pipe_explosion,
• sudden_fall,
• wire,
• plumbing_failure,
• focusing_error,
• sack,
• member_crash,
• chernobyl_accident,
• holdup,
• random_mutation,
• aquarium_release,
• pesticide,
• cross_connection,
• corruption,
• hair_color,
• unintentional_disclosure,
• failure,
• storm_damage,
• chance,
• hurricane_damage,
• magnesium_explosion,
• internal_explosion,
• sexy_voice,
• suffocation,
• physical_malfunction,
• automobile_crash,
• mechanical_devices,
• derailment,
• infection,
• plane_crash,
• uprising,
• personal_quality,
• spinal_injury,
• extraneous_noise,
• certain_quality,
• discharge,
• spillage,
• improvement,
• technological_disaster,
• channel,
• disposal_site,
• illness,
• oil,
• vehicular_collision,
• system_failure,
• flat_battery,
• weakness,
• ship_impact,
• major_leak,
• blunt_trauma,
• health_loss,
• spinal-cord_injury,
• operator_error,
• industrial_chemical,
• capability,
• natural_disaster,
• incipient_ridge,
• shadow,
• vessel_collision,
• fall,
• power,
• impact_pressure,
• infectious_disease,
• motor,
• squeak,
• larceny,
• suicide,
• vascular_injury,
• short_circuit,
• medical_emergency,
• process_losses,
• ship_collision,
• transportation_accident,
• war,
• robbery,
• auto_accident,
• repair,
• production_defect,
• flow_block,
• soil_failure,
• split_drum,
• tanker_incident,
• exposure,
• scraping_nose,
• slip,
• gasoline,
• property_damage,
• change,
• industrial_development,
• physical_damage,
• surface_texture,
• backflow,
• fugitive_emission,
• trouble,
• quality_losses,
• roadside_accident,
• house_fire,
• key_compromise,
• aircraft_impact,
• restorative_dentistry,
• human_error,
• toxic_release,
• disease,
• lightning,
• valve,
• attrition,
• noise,
• accident,
• subsidiary_ridge,
• dam_failure,
• illicit_drug,
• train_derailment,
• landfill_fire,
• passing,
• fuel,
• dimension,
• special,
• transportation_disaster,
• traffic_accident,
• earthquake,
• adequate_emergency,
• expropriation,
• fault,
• electrical_equipment,
• injury,
• modification,
• earthquake_damage,
• scar,
• transportation,
• rebellion,