| Urknalltheorie | Big Bang Theory |
| Zelltheorie | cell theory |
| Spieltheorie | game theory |
| Knotentheorie | knot theory |
| Mengentheorie | set theory |
| Chaostheorie | chaos theory |
| Dramentheorie | dramatic theory |
| Graphentheorie | graph theory |
| Gruppentheorie | group theory |
| Quantentheorie | quantum theory |
| Sprachtheorie | linguistic theory theory of language |
| Staatstheorie | theory of the state |
| Stringtheorie | string theory |
| Urknall | Big Bang |
| Knaller | firecracker |
| Knallkörper | firecracker |
| Knalltüte | nitwit |
| knallhart | tough |
| Allegorie | allegory |
| Kavallerie | cavalry |