|
Two : 1226 phrases in 51 subjects |
| Aerodynamics | 2 |
| Agriculture | 1 |
| Airports and air traffic control | 1 |
| American usage, not spelling | 28 |
| Architecture | 1 |
| Astronautics | 33 |
| Automobiles | 1 |
| Aviation | 43 |
| Botany | 2 |
| Chemistry | 11 |
| Communications | 11 |
| Computers | 7 |
| Concrete | 1 |
| Construction | 15 |
| Diplomacy | 38 |
| Economics | 17 |
| Electronics | 4 |
| Environment | 2 |
| European Union | 1 |
| Figurative | 5 |
| Finances | 4 |
| Gambling | 1 |
| General | 473 |
| Haberdashery | 6 |
| Human rights activism | 1 |
| Idiomatic | 2 |
| Informal | 4 |
| Information technology | 44 |
| Law | 19 |
| Mathematics | 19 |
| Mechanic engineering | 3 |
| Medical | 2 |
| Metallurgy | 6 |
| Microelectronics | 22 |
| Microsoft | 10 |
| Military | 70 |
| Music | 1 |
| Nautical | 3 |
| Oil and gas | 26 |
| Politics | 1 |
| Proverb | 221 |
| Records management | 1 |
| Road construction | 1 |
| Space | 2 |
| Sports | 1 |
| Statistics | 2 |
| Technology | 47 |
| Telecommunications | 1 |
| Transport | 6 |
| Weapons and gunsmithing | 2 |
| Zoology | 1 |