 |
| high: 179 phrases in 27 subjects |
| Abbreviation | 102 |
| Aviation | 1 |
| Business | 1 |
| Ecology | 1 |
| Education | 3 |
| Electronics | 1 |
| Energy industry | 2 |
| Information technology | 1 |
| Investment | 4 |
| Law | 1 |
| Literature | 1 |
| Mass media | 1 |
| Military | 4 |
| NASA | 3 |
| Oceanography & oceanology | 2 |
| Oil and gas technology | 1 |
| Photography | 1 |
| Quantum mechanics | 2 |
| Radio | 2 |
| Rail transport | 2 |
| School | 34 |
| Sports | 1 |
| Stock Exchange | 2 |
| Telecommunications | 1 |
| Trademark | 1 |
| United States | 3 |
| University | 1 |