 |
| helmet: 55 phrases in 19 subjects |
| Earth sciences | 1 |
| Electronics | 1 |
| Environment | 1 |
| General | 8 |
| Health care | 4 |
| Hobbies and pastimes | 2 |
| Industry | 5 |
| Labor law | 11 |
| Law | 1 |
| Life sciences | 1 |
| Medical | 3 |
| Metallurgy | 4 |
| Mineral products | 1 |
| Natural sciences | 1 |
| Patents | 2 |
| Politics | 1 |
| Statistics | 2 |
| Transport | 5 |
| United Nations | 1 |