| Opium | opium |
| Odium | odium |
| Opi | grandfather |
| Opiat | opiate |
| Opiumkrieg | Opium War |
| Aptium | Aptian |
| Nodium | bored |
| Osmium | osmium |
| Podium | podium |
| Kopiar | cartulary |
| Kopist | copyist |
| Mopila | morning wood |
| Doping | doping |
| Europium | europium |
| Hopi | Hopi |
| Kopie | copy duplicate blueprint manifold replica replication print reprint |
| Opioid | opioid |
| Appius | Appius |
| Aeronium | Aeronian |
| Danium | Danian |