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| English thesaurus | |||
| |||
| f- | |||
| Filament: 274 phrases in 23 subjects |
| Agriculture | 2 |
| Antennas and waveguides | 4 |
| Astronomy | 5 |
| Chemistry | 6 |
| Earth sciences | 9 |
| Electronics | 50 |
| Energy industry | 1 |
| Fish farming pisciculture | 1 |
| General | 6 |
| Industry | 66 |
| Life sciences | 2 |
| Lighting other than cinema | 2 |
| Materials science | 1 |
| Medical | 37 |
| Metallurgy | 2 |
| Natural sciences | 2 |
| Patents | 2 |
| Physics | 1 |
| Technology | 5 |
| Textile industry | 63 |
| Transport | 5 |
| Vacuum tubes | 1 |
| Zoology | 1 |