| Ökonomin | economist |
| Ökonomie | economy |
| Ökologin | ecologist |
| Ökonom | economist |
| Ökoton | ecotone |
| Zökotomie | cecotomy typhlotomy |
| Ökologie | ecology |
| Ökonym | econym |
| ökonomisch | economic economical |
| Konoid | conoid |
| Königin | queen |
| Agronomin | agronomist |
| Önologin | oenologist |
| Bionomie | bionomics |
| Pronomen | pronoun |
| Kognomen | cognomen |
| Ökonomismus | economism |
| Ökozid | ecocide |
| Kokon | cocoon |
| Okonomiyaki | okonomiyaki |