| Koaleszenz | coalescence |
| Koaleszer | coalescer |
| Konvaleszenz | convalescence |
| Adoleszenz | adolescence |
| koalieren | form a coalition |
| Kalenden | calends |
| Rekonvaleszenz | convalescence |
| Obsoleszenz | obsolescence |
| vorlesen | read aloud read out read out loud |
| Koblenz | Koblenz |
| Koexistenz | coexistence |
| Kompetenz | competence |
| Konferenz | conference |
| Konsequenz | consequence |
| Konsistenz | consistency |
| Konvergenz | convergence |
| Koalition | coalition |
| Aleuten | Aleutian Islands |
| Kalesche | cabriolet |
| Kalette | culet |