| Koedukation | coeducation |
| koedukativ | coeducational |
| Modulation | modulation |
| Konduktion | conduction |
| Kopulation | copulation |
| Kodifikation | codification |
| Produktion | production |
| Abduktion | abduction abductive reasoning |
| Deduktion | deduction |
| Induktion | induction electromagnetic induction mathematical induction |
| Obduktion | autopsy postmortem post mortem postmortem examination |
| Reduktion | reduction |
| Seduktion | seduction |
| Abdikation | abdication |
| Indikation | indication |
| Kollokation | collocation |
| Konvokation | convocation |
| Medikation | medication |
| Konurbation | conurbation |
| Föderation | federation |