| Kohlenzeche | colliery |
| Kohlechemie | carbochemistry |
| Kohleneimer | scuttle |
| Kohlenfisch | sablefish |
| Kohlensäure | carbonic acid |
| Ballenzehe | bunion |
| Ohrenzeuge | earwitness |
| Ohrenlerche | horned lark |
| Kohlfisch | coalfish Spanish fly |
| Kohlegrube | mine |
| Kohleherd | coal stove |
| Kohlenstoff | carbon |
| Kohlmeise | great tit |
| Höhlenkunde | speleology |
| Höhlenlöwe | cave lion |
| Höhlenmensch | caveman |
| Wohlergehen | wellbeing |
| Mühlenlehre | molinology |
| Rollenkette | roller chain |
| Koblenz | Koblenz |