| Kornkrebs | wheat weevil |
| Kornkreis | crop circle |
| Hirnkrebs | brain cancer |
| konkret | concrete |
| Kornhaus | granary |
| Körnchen | grain |
| Korken | plug stopper |
| Kornett | cornet |
| Kornfeld | cornfield |
| Kornrade | corncockle |
| korrekt | correct |
| Hornklee | birdsfoot trefoil lotus |
| Kernkraft | nuclear power |
| Senkreis | cutting |
| Feenkreis | fairy circle fairy ring |
| Inkreis | incircle |
| Knochenkrebs | bone cancer |
| Konkretum | concrete noun |
| Pankreas | pancreas salivary gland of the abdomen |
| Hautkrebs | skin cancer |