| Nachforschung | inquiry |
| nachforschen | investigate inquire into the matter |
| Raumforschung | space science |
| Walforschung | cetology |
| Namenforschung | onomatology |
| Chaosforschung | chaos theory |
| Hirnforschung | neuroscience |
| Käferforschung | coleopterology |
| Erforschung | exploration investigation research |
| Feldforschung | field research fieldwork |
| Forschung | research |
| Marktforschung | market research |
| Moorforschung | marshy inquiry |
| Nachbesserung | amendment |
| Nachprüfung | review |
| Nachschlag | second |
| Nachtschön | marvel of Peru |
| Nachbarschaft | neighbourhood |
| Nachschub | addition |
| Nachwirkung | aftermath after-effect aftereffect repercussion |