| Ideenlehre | theory of forms |
| Mühlenlehre | molinology |
| Formenlehre | morphology |
| Mengenlehre | set theory theory of sets |
| Tugendlehre | aretology |
| Verslehre | metrics |
| Ideologe | ideologist |
| Ideologie | ideology |
| ideell | ideal ideational |
| Greenfee | green fee |
| Greenpeace | Greenpeace |
| Rückenlehne | back |
| Innenleben | inner feelings inner workings |
| Weinlese | vintage grape harvest grape gathering |
| Gelehrte | savant |
| Gewebelehre | histology |
| Lautlehre | phonetics |
| Raumlehre | geometry |
| Schublehre | vernier caliper |
| Vielehe | group marriage |