A combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins.
| COAL | broader | CHARCOAL OR COAL |
| COAL | linked | EMBERS |
| COAL | linked | EMBERS |
| COAL | linked | EMBERS |
| CHARCOAL OR COAL | narrower | COAL |
| EMBERS | linked | COAL |
| EMBERS | linked | COAL |
| EMBERS | linked | COAL |
| Id | Concept in source | Conceptlist |
|---|---|---|