| Katastrophenreaktion | catastrophic behavior catastrophic reaction |
| Katastrophenalarm | red alert |
| Katastrophenfilm | disaster movie |
| Katastrophenschutz | civil protection disaster control emergency management |
| Kettenreaktion | chain reaction |
| Katastrophen- | catastrophic |
| Katastrophe | catastrophe calamity disaster |
| katastrophal | disastrous |
| Kernreaktion | nuclear reaction |
| Abbruchreaktion | chain termination |
| Bypassoperation | bypass surgery |
| Katasteramt | cadastre |
| Kataphrakt | cataphract |
| Astralprojektion | astral projection |
| Kastriererin | castrator |
| Astronautin | female astronaut |
| Kastration | castration |
| Abstraktion | abstraction |
| Angstregression | anxiety regression |
| Industrienation | industrial nation |