| refuel | |
| rhodonite(noun, mineral) | |
| rocket fuel | |
| salt(noun, mineral) | |
| sea coal | |
| sear | |
| sedimentary | |
| sedimentary rock | |
| selenite(noun, mineral) | |
| sell | |
| silica(noun, mineral) | |
| silicate(noun, mineral) | |
| singe | |
| slack(noun, bitumen) | |
| sloe | |
| smoke | |
| solder | |
| solid fuel | |
| spar(noun, mineral) | |
| sulfur(noun, mineral) |
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| APA | Smart Define. (2015). coal thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/coal/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "coal thesaurus" https://smartdefine.org/coal/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, coal thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/coal/thesaurus/synonyms>. |
| MLA | Smart Define. "coal thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/coal/thesaurus/synonyms> |