 earthquake | release | whirlwind | Epidemics |
| avalanche | cataclysm | typhoon | hurricane |
| flood control | betray | storm | debacle |
| Nuclear accidents | Disaster prevention | Emergency relief | contaminant |
| Catastrophic phenomena | Accidental release of organisms | Desert locusts | environmental accident |
| Human-made disasters | Emergency relief measures | Emergency shelter | Environmental contingency planning |
| Radioactive decontamination | tabernacle | temporary shelter | Habitat destruction |
| Land-based activities | Physical alterations | Seismic sea waves | Disaster clean-up operations |
| Disaster preparedness | Disaster relief | Displaced persons | |