| Önologin | oenologist |
| Önologie | oenology enology |
| Onkologin | oncologist |
| Ontologin | ontologist |
| Ökologin | ecologist |
| Phonologin | phonologist |
| Pönologie | penology |
| Önologe | enologist |
| Sinologin | sinologist |
| Oologie | oology |
| Podologin | podiatrist |
| Pomologin | pomologist |
| Urologin | urologist |
| Biologin | biologist |
| Geologin | geologist |
| Onkologie | oncology |
| Ontologie | ontology |
| Otologie | otology |
| Zoologin | zoologist |
| Ökologie | ecology |