| Hohlkasten | box girder |
| Spülkasten | cistern |
| Formkasten | flask |
| Postkasten | collection box drop box letter box mailbox postbox letterbox mail slot |
| Lohnkosten | payroll |
| Hohlbeitel | gouge |
| Hohlkehle | fillet |
| Hohlspatel | trowel |
| Hohltaube | stock dove |
| Hohlzahn | hemp-nettle |
| höhlen | hollow out |
| Wohltäter | benefactor |
| Hickelkasten | hopscotch |
| Polkappen | polar cap |
| Baukasten | building blocks |
| Schaukasten | showcase |
| Senkkasten | caisson |
| Bierkasten | beer crate crate of beer |
| Brotkasten | breadbox bread bin |
| Brutkasten | incubator |