Simple categories matching cataclysmic:

• conflict,
• occurrence,
• change,
• eruption,
• event,
• failure,
• situation,

Members with property cataclysmic:

• flood,
• war,
• collision,
• lightning_strike,
• invasion,
• collectivization,
• hit,
• gravitational_collapse,
• international_conflict,
• famine,
• volcanic_eruption,
• strike,
• worldwide_flood,
• arson,
• nuclear_war,
• natural_disaster,
• building_collapse,
• meteorite_impact,
• creation,
• meteor_strike,
• job_loss,
• global_pandemic,
• massive_flood,
• eruption,
• neutron-star_collision,
• fire,
• terrorism,
• regicide,
• conflict,
• supernova_explosion,
• asteroid_strike,
• nova_eruption,
• major_war,
• pestilence,
• change,
• tectonic_change,
• stellar_explosion,
• asteroid_collision,
• world,
• severe_storm,
• aftermath,
• collapse,
• great_flood,
• bioterrorism,
• stellar_collapse,
• revolution,
• epidemic,
• continuing_expansion,
• tsunami,
• sumatran_tsunami,
• nuclear_attack,
• pole_shift,
• holocaust,
• pandemic,
• genocide,
• depression,
• bombing,
• nuclear_holocaust,
• asteroid_impact,
• train_wreck,
• technological_change,
• firing,
• french_revolution,
• indian-ocean_tsunami,
• asteroid_hit,
• explosion,
• plane_crash,
• attack,
• meteorite_strike,
• bombay_riot,
• land_upheaval,
• meteoric_collision,
• earth_impact,
• lava_flow,
• binary_merger,
• avalanche,
• landslide,
• fall,