| Ökologe | ecologist |
| Ökologie | ecology |
| Onkologe | oncologist |
| Önologe | enologist |
| Ökologin | ecologist |
| Tokologie | tocology |
| Mykologe | mycologist |
| Onkologie | oncology |
| -ologe | -ologist |
| Ontologe | ontologist |
| Oologie | oology |
| Podologe | podiatrist |
| Ufologe | ufologist |
| Biologe | biologist |
| Geologe | geologist |
| Oktologie | octology |
| Otologie | otology |
| Pomologe | pomologist |
| Urologe | urologist |
| Zoologe | zoologist |