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grounds : 1762 phrases in 97 subjects |
| Acridology | 3 |
| Agriculture | 108 |
| Animal husbandry | 4 |
| Antennas and waveguides | 4 |
| Artillery | 1 |
| Astronautics | 1 |
| Astronomy | 1 |
| Automated equipment | 3 |
| Automobiles | 13 |
| Aviation | 15 |
| Baseball | 12 |
| Biology | 1 |
| Botany | 4 |
| Business | 1 |
| Cables and cable production | 1 |
| Chemistry | 21 |
| Coal | 13 |
| Coffee | 1 |
| Commerce | 4 |
| Communications | 94 |
| Construction | 29 |
| Cultural studies | 1 |
| Demography | 4 |
| Drilling | 1 |
| Earth sciences | 62 |
| Ecology | 3 |
| Economics | 5 |
| Education | 1 |
| Electric machinery | 8 |
| Electrical engineering | 3 |
| Electricity | 5 |
| Electricity generation | 3 |
| Electronics | 122 |
| Energy industry | 6 |
| Entomology | 5 |
| Environment | 71 |
| Finances | 4 |
| Fish farming pisciculture | 16 |
| Fishery fishing industry | 6 |
| Forestry | 31 |
| General | 97 |
| Geology | 18 |
| Health care | 1 |
| Hobbies and pastimes | 5 |
| Human rights activism | 13 |
| Ichthyology | 1 |
| Immigration and citizenship | 4 |
| Industry | 29 |
| Information technology | 14 |
| Insurance | 1 |
| Isolation | 8 |
| Knitted goods | 2 |
| Labor law | 8 |
| Laboratory equipment | 1 |
| Lasers | 1 |
| Law | 80 |
| Life sciences | 107 |
| Magnetics | 2 |
| Mammals | 1 |
| Marketing | 1 |
| Materials science | 9 |
| Measuring instruments | 6 |
| Mechanic engineering | 21 |
| Medical | 23 |
| Metallurgy | 7 |
| Meteorology | 42 |
| Military | 18 |
| Natural resourses and wildlife conservation | 6 |
| Natural sciences | 36 |
| Nuclear and fusion power | 1 |
| Nuclear physics | 2 |
| Obsolete / dated | 2 |
| Oceanography & oceanology | 2 |
| Packaging | 7 |
| Patents | 25 |
| Pest control | 1 |
| Pharmacy and pharmacology | 1 |
| Politics | 4 |
| Power lines | 2 |
| Procedural law | 3 |
| Radio | 1 |
| Radiolocation | 1 |
| Rail transport | 1 |
| Real estate | 2 |
| Remote sensing | 16 |
| Scientific | 1 |
| Social science | 1 |
| Soil science | 7 |
| Statistics | 1 |
| Taxes | 1 |
| Technology | 187 |
| Telecommunications | 1 |
| Textile industry | 6 |
| Transport | 214 |
| United Nations | 13 |
| Water resources | 3 |
| Zoology | 3 |