 |
| clearance: 2093 phrases in 85 subjects |
| Advertising | 8 |
| Agriculture | 36 |
| Air defense | 4 |
| Animal husbandry | 4 |
| Archery | 1 |
| Architecture | 11 |
| Artificial intelligence | 1 |
| Athletics | 8 |
| Automobiles | 203 |
| Aviation | 133 |
| Bridge construction | 53 |
| Business | 63 |
| Cartography | 1 |
| Chemistry | 11 |
| China | 8 |
| Commerce | 14 |
| Communications | 3 |
| Compressors | 58 |
| Computer numerical control | 8 |
| Construction | 15 |
| Consulting | 1 |
| Corporate governance | 6 |
| Cryptography | 1 |
| Customs | 2 |
| Cycle sport | 1 |
| Cycling other than sport | 1 |
| Drilling | 14 |
| Earth sciences | 6 |
| Ecology | 3 |
| Economy | 40 |
| Electric machinery | 20 |
| Electricity generation | 2 |
| Electronics | 77 |
| Engineering geology | 18 |
| Environment | 1 |
| Exhibitions | 5 |
| Explosives and Explosive Ordnance Disposal | 16 |
| Finances | 6 |
| Football | 4 |
| General | 17 |
| Genetics | 1 |
| Geology | 1 |
| Horticulture | 1 |
| Hydroelectric power stations | 35 |
| Industry | 2 |
| Information technology | 3 |
| International Monetary Fund | 6 |
| International trade | 46 |
| Law | 2 |
| Librarianship | 1 |
| Life sciences | 2 |
| Logistics | 10 |
| Management | 3 |
| Mechanic engineering | 2 |
| Mechanics | 3 |
| Metallurgy | 47 |
| Municipal planning | 1 |
| Nautical | 12 |
| Nuclear physics | 1 |
| Nursing | 11 |
| Oil / petroleum | 52 |
| Plastics | 32 |
| Politics | 1 |
| Project management | 12 |
| Racing and motorsport | 2 |
| Rail transport | 50 |
| Refrigeration | 8 |
| Reproductive biology | 7 |
| Securities | 6 |
| Shipbuilding | 20 |
| Skydiving | 2 |
| Soil science | 2 |
| Space | 30 |
| Sports | 6 |
| Steel production | 2 |
| Surgery | 3 |
| Technology | 692 |
| Telecommunications | 5 |
| Tennis | 1 |
| Textile industry | 57 |
| Transport | 4 |
| United Nations | 8 |
| Welding | 1 |
| Wind Energy | 15 |
| Wood processing | 1 |