| Eichtheorie | gauge theory |
| Diphtherie | diphtheria |
| Eichhorn | squirrel |
| Ichthyose | ichthyosis |
| Dichterin | poetess |
| Dichtheit | impermeability |
| Ichthyosis | ichthyosis |
| Richterin | judge |
| Zichorie | chicory succory |
| Echtheit | authenticity fastness |
| Sprachtheorie | linguistic theory theory of language |
| Zelltheorie | cell theory |
| M-Theorie | M-theory |
| Spieltheorie | game theory |
| Theorie | theory |
| Eichhase | squirrel |
| Weichheit | softness |
| Zeichnerin | cartoonist draughtsman |
| leichter | easier |
| Leichter | lighter |