| Wirkungskraft | efficacy efficiency virtue active force effectualness |
| Wirkungsgrad | efficiency degree of efficiency |
| Fassungskraft | apprehension |
| Zeugungskraft | virility |
| Führungskraft | executive manager |
| Reibungskraft | frictional force |
| Willenskraft | volition |
| Wirkungsquantum | Planck's constant |
| wirkungslos | ineffective |
| wirkungsvoll | effective |
| Birkensaft | birch sap |
| Reinigungskraft | cleaner |
| Schwungkraft | momentum |
| Anziehungskraft | attraction appeal |
| Windkraft | wind power wind energy |
| Wirkungsbereich | ambit |
| Wirkung | effect impact |
| Wirtschaft | economy inn economics |
| Kundschaft | clientele |
| Schöpfungskraft | fecundity |