 |
| |||
| hard; tough | |||
| solid; rigid; stiff | |||
| |||
| toughened | |||
| twardy: 92 phrases in 18 subjects |
| Agriculture | 7 |
| Botany | 1 |
| Building materials | 1 |
| Chemistry | 9 |
| Construction | 25 |
| Earth sciences | 1 |
| Economy | 2 |
| Electrochemistry | 1 |
| Electronics | 2 |
| Forestry | 3 |
| General | 16 |
| Law | 1 |
| Lighting other than cinema | 1 |
| Magnetics | 1 |
| Medical | 5 |
| Metallurgy | 3 |
| Microsoft | 12 |
| Welding | 1 |