 |
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| culm; stone coal | |||
| hard coal | |||
| charcoal; charcoal black; charcoal gray | |||
| black coal; black coal A natural black graphitelike material used as a fuel, formed from fossilized plants and consisting of amorphous carbon with various organic and some inorganic compounds | |||
| stove coal; hard coal stonecoal; lean coal | |||
| anthracite | |||
| |||
| anthracitic coals | |||
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anthracite : 24 phrases in 9 subjects |
| Chemistry | 4 |
| Coal | 1 |
| Cultural studies | 3 |
| Energy industry | 1 |
| General | 5 |
| Metallurgy | 7 |
| Microsoft | 1 |
| Natural resourses and wildlife conservation | 1 |
| Statistics | 1 |