| Abgasreinigung | exhaust treatment |
| Blutreinigung | hemodialysis |
| Abluftreinigung | waste air purification |
| Abwasserreinigung | sewage purification water treatment |
| Bereinigung | depuration |
| Abgrenzung | delimitation disassociation distinction |
| Reinigung | cleaning purification cleaner's |
| Rohrreinigung | drain cleaning |
| Vereinigung | union unification association |
| Verunreinigung | contamination |
| Zahnreinigung | dental cleaning teeth cleaning |
| Bescheinigung | certificate |
| Steinigung | stoning |
| Beseitigung | elimination |
| Gasheizung | gas heater gas heating |
| Gasleitung | gas line gas pipe |
| Glasreiniger | glass cleaner window cleaner |
| Abreibung | attrition |
| Abstreitung | denial |
| bereinigen | acquit |