| Kardanwelle | cardan shaft |
| Karamelle | caramel |
| Karavelle | caravel |
| Dardanellen | Dardanelles |
| Kardinale | cardinal numeral |
| Karamell | caramel |
| Kardangelenk | Hooke's joint cardan joint u-joint universal joint |
| Sardelle | anchovy |
| Bodenwelle | bump |
| Katzenwelpe | kitten |
| Kurbelwelle | crankshaft |
| Kältewelle | cold snap |
| Kaltwelle | cold wave cold-perm permanent wave |
| Kurzwelle | shortwave |
| Radiowelle | radio wave radio station |
| Organelle | organelle |
| Kardone | cardoon |
| Karfunkel | carbuncle |
| Karneol | carnelian |
| Karakalfell | caracal fur |