| Hohlraum | cavity hollow space |
| Kühlraum | larder |
| Hallraum | echo chamber |
| Hofraum | court |
| Wohnraum | quarters housing |
| Hohltaube | stock dove |
| Hohlzahn | hemp-nettle |
| Hohlkreuz | hollow back |
| Kohlrabi | kohlrabi German turnip |
| Wohllaut | melody |
| wohlauf | well |
| Müllraum | room for the refuse |
| Haftraum | cell |
| Hubraum | piston displacement pistone swept volume |
| Vorraum | antechamber anteroom |
| Ölbaum | olive devilwood devilwood osmanthus |
| Hohlheit | speciousness |
| Hohlkopf | ding-a-ling |
| Hohlrinne | chamfer |
| Hohltier | coelenterate |