| Bohrium | bohrium |
| Bohrturm | drilling rig drilling derrick |
| Barium | barium |
| Bohei | hullabaloo |
| Böhmin | Bohemian |
| bohrend | nagging |
| Bohrer | drill |
| Bohrung | drilling boring sinking bore borehole drill-hole |
| bohren | drill bore |
| Mohrin | Moor |
| Ohrwurm | earwig earworm catchy tune earbuds |
| Ovarium | ovary |
| -arium | -arium |
| Atrium | atrium |
| Curium | curium |
| Natrium | sodium |
| Proprium | proper |
| Rosarium | rosary |
| Solarium | sunbed tanning bed |
| Thorium | thorium |