| Copernicium | copernicium |
| Copernicus | Copernicus |
| Kopernikus | Copernicus |
| Americium | americium |
| Coniacium | Coniacian |
| Köpenick | Köpenick |
| Opernhaus | opera house opera |
| Kapernaum | Capernaum |
| Koppernick | Copernicus |
| Hesperidium | hesperidium |
| Imperium | empire imperium |
| Perigäum | perigee |
| Perineum | perineum |
| Spermium | spermatozoon |
| perniziös | pernicious |
| Internodium | internode internodal segment |
| Modernismus | modernism |
| Toarcium | Toarcian |
| Olenekium | Olenekian |
| Pentium | Pentium |