| Kombination | combination |
| Kombinationsfeld | combo box |
| Kombinationszange | combination pliers engineers pliers |
| Kommutation | substitution test |
| Komparation | comparison |
| Kompensation | compensation |
| Komplikation | complication |
| Gemination | gemination |
| Koordination | coordination |
| Ordination | ordination |
| Rumination | rumination |
| Kolligation | colligation |
| Kohabitation | cohabitation |
| Kompilator | compiler |
| Komposition | composition |
| Kühlkombination | fridge-freezer |
| Kombinatorik | combinatorial analysis |
| Komitativ | comitative case |
| Kommission | commission committee |
| Kommunikation | communication |