| ökologisch | ecological |
| ökonomisch | economic economical |
| pomologisch | pomological |
| ufologisch | ufological |
| biologisch | biological organic |
| geologisch | geologic geological |
| nomologisch | nomological |
| ontologisch | ontological |
| topologisch | topologic topological topologically |
| urologisch | urological |
| zoologisch | zoological |
| Ökologin | ecologist |
| Ökologismus | environmentalism |
| Ökologie | ecology |
| Kölnisch | Kölsch |
| toxikologisch | toxicological |
| autologisch | autological |
| bryologisch | bryological |
| phonologisch | phonological |
| soziologisch | sociological |