| Kartellamt | antitrust agency |
| Kartell | cartel |
| Karela | bitter melon |
| Kartomant | cartomancer |
| Kartular | cartulary |
| Karpell | carpel |
| Karteikarte | index card |
| Kartellrecht | antitrust law cartel law monopolies law |
| Kartenhaus | house of cards |
| karteln | play cards |
| Artefakt | artefact artifact |
| Castella | castella |
| Kastell | castellum castelet castellet |
| Patella | patella |
| Satellit | satellite |
| Patentamt | patent office |
| Karait | Karaite |
| Karamelle | caramel |
| Karbonat | carbonate |
| Kargland | barren |