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|
drain : 233 phrases in 21 subjects |
| Agriculture | 55 |
| Aviation | 7 |
| British usage, not spelling | 2 |
| Chemistry | 1 |
| Computers | 9 |
| Construction | 43 |
| Dentistry | 2 |
| Forestry | 1 |
| General | 1 |
| Hydraulic engineering | 44 |
| Medical | 31 |
| Medical appliances | 4 |
| Mining | 3 |
| Natural resourses and wildlife conservation | 6 |
| Packaging | 1 |
| Radio | 5 |
| Shipbuilding | 1 |
| Surgery | 1 |
| Technology | 13 |
| Water resources | 2 |
| World war II | 1 |