| Connection | connection |
| Connecticut | Connecticut |
| Konfektion | make manufacture ready-to-wear off-the-peg clothing off-the-rack clothing clothing industry |
| Konvention | convention |
| Konzeption | conception |
| Gönnerin | giver |
| Abonnentin | subscriber |
| Konnotation | connotation |
| Annexion | annexation annexion |
| Selection | choice |
| Foundation | foundation |
| Ingestion | ingestion |
| Invention | invention |
| Konduktion | conduction |
| Konkretion | concretion |
| Konsumtion | consumption |
| Infektion | infection |
| Injektion | injection shot |
| Intention | intention |
| Ionisation | ionization ionisation |