| Coniacium | Coniacian |
| Confucius | Confucius |
| Coniin | coniine |
| Connacht | Connacht |
| Ammoniacum | ammoniacum |
| Königtum | monarchy |
| Monitum | remark |
| Niacin | niacin |
| Konfucius | Confucius |
| Silicium | silicon |
| Toarcium | Toarcian |
| Calcium | calcium |
| Copernicium | copernicium |
| Capitanium | Capitanian |
| Cenomanium | Cenomanian |
| Columbium | columbium |
| Ossarium | ossuary |
| Ovarium | ovary |
| Roadium | Roadian |
| Apiarium | apiary beeyard |