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grounds : 3937 phrases in 140 subjects |
| Agriculture | 192 |
| Agronomy | 8 |
| Alternative dispute resolution | 9 |
| American usage, not spelling | 3 |
| Amphibians and reptiles | 12 |
| Antennas and waveguides | 4 |
| Archaeology | 10 |
| Architecture | 1 |
| Artificial intelligence | 6 |
| Astronautics | 4 |
| Astronomy | 1 |
| Athletics | 5 |
| Automated equipment | 4 |
| Automobiles | 1 |
| Aviation | 10 |
| Ball bearings | 1 |
| Biology | 17 |
| Botany | 7 |
| British usage, not spelling | 13 |
| Building structures | 1 |
| Business | 12 |
| Cables and cable production | 2 |
| Chemistry | 64 |
| Coal | 7 |
| Commerce | 1 |
| Communications | 63 |
| Computers | 2 |
| Construction | 375 |
| Cooking | 4 |
| Cultural studies | 1 |
| Customs | 3 |
| Demography | 3 |
| Drilling | 3 |
| Earth sciences | 55 |
| Ecology | 1 |
| Economics | 39 |
| Education | 4 |
| Electric machinery | 6 |
| Electric motors | 1 |
| Electric traction | 1 |
| Electricity generation | 2 |
| Electronics | 103 |
| Emergency medical care | 7 |
| Energy industry | 4 |
| Entomology | 24 |
| Environment | 71 |
| European Union | 2 |
| Figurative | 16 |
| Finances | 5 |
| Fish farming pisciculture | 10 |
| Food industry | 22 |
| Football | 1 |
| Foreign trade | 22 |
| Forestry | 13 |
| Foundation engineering | 2 |
| Gear train | 2 |
| General | 454 |
| Geography | 3 |
| Geology | 19 |
| Geomechanics | 16 |
| Geophysics | 5 |
| Government, administration and public services | 1 |
| Grass hockey | 3 |
| Gymnastics | 4 |
| Handball | 2 |
| Health care | 5 |
| Helicopters | 1 |
| Hobbies and pastimes | 5 |
| Horticulture | 1 |
| Human rights activism | 12 |
| Hydrology | 3 |
| Ichthyology | 3 |
| Idiomatic | 1 |
| Immigration and citizenship | 8 |
| Industry | 20 |
| Informal | 5 |
| Information technology | 12 |
| Insurance | 3 |
| Isolation | 5 |
| Judo | 2 |
| Labor law | 3 |
| Law | 125 |
| Life sciences | 121 |
| Magnetics | 2 |
| Mammals | 37 |
| Marketing | 4 |
| Materials science | 8 |
| Measuring instruments | 18 |
| Mechanic engineering | 34 |
| Medical | 44 |
| Medical appliances | 6 |
| Melioration | 4 |
| Metallurgy | 43 |
| Meteorology | 2 |
| Microelectronics | 20 |
| Military | 7 |
| Mineral products | 1 |
| Mining | 169 |
| Municipal planning | 2 |
| Natural resourses and wildlife conservation | 51 |
| Natural sciences | 20 |
| Nuclear and fusion power | 1 |
| Nuclear physics | 48 |
| Obsolete / dated | 4 |
| Opencast mining | 1 |
| Optics branch of physics | 94 |
| Ornithology | 177 |
| Packaging | 3 |
| Paragliding | 6 |
| Patents | 35 |
| Pharmacy and pharmacology | 5 |
| Physics | 57 |
| Politics | 6 |
| Polygraphy | 1 |
| Power lines | 2 |
| Procedural law | 4 |
| Quality control and standards | 2 |
| Radio | 1 |
| Rail transport | 2 |
| Refrigeration | 2 |
| Sample preparation | 2 |
| Satellite communications | 3 |
| Skiing | 10 |
| Social science | 2 |
| Soil science | 12 |
| Sports | 10 |
| Statistics | 4 |
| Surveying | 1 |
| Taxes | 10 |
| Technology | 596 |
| Telecommunications | 1 |
| Tennis | 2 |
| Textile industry | 5 |
| Transport | 218 |
| Travel | 1 |
| Volleyball | 1 |
| Weapons and gunsmithing | 10 |
| Weightlifting | 4 |
| Wrestling | 2 |
| Zoology | 16 |