 |
| open door: 332 phrases in 41 subjects |
| American usage, not spelling | 5 |
| Architecture | 2 |
| Astronautics | 1 |
| Automated equipment | 1 |
| Automobiles | 9 |
| Aviation | 11 |
| Bookish / literary | 1 |
| Business | 2 |
| Communications | 1 |
| Construction | 2 |
| Corporate governance | 2 |
| Diplomacy | 2 |
| Economy | 2 |
| Figurative | 2 |
| Figure of speech | 4 |
| Firefighting and fire-control systems | 1 |
| Foreign policy | 1 |
| General | 128 |
| Idiomatic | 2 |
| Informal | 2 |
| Law | 1 |
| Makarov | 91 |
| Mathematics | 1 |
| Metro and rapid transit | 4 |
| Military | 1 |
| Molikpaq | 4 |
| Obsolete / dated | 1 |
| Oil / petroleum | 2 |
| Oil and gas | 1 |
| Politics | 3 |
| Programming | 2 |
| Proverb | 27 |
| Rhetoric | 2 |
| Security systems | 3 |
| Show business | 1 |
| Surgery | 1 |
| Technology | 1 |
| Telecommunications | 1 |
| Transport | 2 |
| Uncommon / rare | 1 |
| Vulgar | 1 |