Agriculture	52
American usage, not spelling	1
Animal husbandry	7
Astronautics	1
Automated equipment	7
Automatic control	2
Aviation	7
British usage, not spelling	1
Chemistry	52
Chess	2
Coal	10
Commerce	2
Communications	28
Computer numerical control	2
Computers	2
Construction	137
Corporate governance	1
Criminal law	3
Cultural studies	2
Earth sciences	36
Ecology	2
Economics	27
Education	6
Electric traction	10
Electricity generation	2
Electronics	33
Energy industry	22
Engineering	1
Environment	31
Equestrian sports	1
Finances	30
Fish farming pisciculture	7
Fishery fishing industry	5
Food industry	2
Football	3
Forestry	7
Gear train	11
General	219
Genetics	1
Government, administration and public services	1
Health care	12
Hobbies and pastimes	9
Horticulture	1
Human rights activism	1
Immigration and citizenship	2
Industry	24
Informal	1
Information technology	20
International law	4
International Monetary Fund	2
International trade	2
Kayaking	1
Labor law	8
Law	126
Life sciences	3
Loading equipment	5
Magnetics	1
Marketing	1
Materials science	14
Measuring instruments	1
Mechanic engineering	135
Medical	52
Metallurgy	54
Microsoft	2
Military	14
Mineral products	3
Municipal planning	19
Name of organization	30
Natural resourses and wildlife conservation	45
Natural sciences	39
Nuclear physics	8
Obsolete / dated	2
Patents	26
Pest control	1
Physics	1
Plumbing	4
Politics	64
Public relations	1
Rail transport	2
Research and development	1
Scientific	2
Social science	6
Speed skating	1
Swimming	1
Taxes	3
Technology	63
Textile industry	1
Thermal Energy	2
Trade unions	1
Transport	318
United Nations	20
Water resources	12