| Esperanto | Deutsch | |
| ionio | [Chemie] lonium — Uran | ✘ |
| polonio | Polonium | ✘ |
| koronio | [Chemie] Koronium | ✘ |
| amonio | Ammonium | ✘ |
| zirkonio | [Metall] Zirkonium | ✘ |
| plutonio | Plutonium | ✘ |
| harmoniumo | Harmonium — Musikinstrument | ✘ |
| traŭtoniumo | Trautonium — elektronisches Musikinstrument | ✘ |
| stramonio | Stramonium | ✘ |
| patrimonio | Patrimonium | ✘ |
| kolofono | Kolophonium | ✘ |
| atesto | Testimonium | ✘ |
| pandemonio | Pandämonium — Dämonen-Tempel | ✘ |