"煤炭" meaning in Japanese

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        "3": "煤炭",
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      "expansion": "Middle Chinese 煤炭",
      "name": "der"
    }
  ],
  "etymology_text": "Middle Chinese 煤炭",
  "forms": [
    {
      "form": "煤炭",
      "ruby": [
        [
          "煤",
          "ばい"
        ],
        [
          "炭",
          "たん"
        ]
      ],
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        "romanization"
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      "args": {
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      "expansion": "煤(ばい)炭(たん) • (baitan)",
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  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
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        {
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          "parents": [],
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        },
        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Mining",
          "orig": "ja:Mining",
          "parents": [
            "Industries",
            "Business",
            "Economics",
            "Society",
            "Social sciences",
            "All topics",
            "Sciences",
            "Fundamental"
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        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Natural resources",
          "orig": "ja:Natural resources",
          "parents": [
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
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        },
        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Rocks",
          "orig": "ja:Rocks",
          "parents": [
            "Geology",
            "Natural materials",
            "Earth sciences",
            "Materials",
            "Nature",
            "Sciences",
            "Manufacturing",
            "All topics",
            "Human activity",
            "Fundamental",
            "Human behaviour",
            "Human"
          ],
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        }
      ],
      "glosses": [
        "coal"
      ],
      "id": "en-煤炭-ja-noun-bRFMlfv1",
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          "coal",
          "coal"
        ]
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      "synonyms": [
        {
          "roman": "sekitan",
          "ruby": [
            [
              "石炭",
              "せきたん"
            ]
          ],
          "word": "石炭"
        }
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  ],
  "sounds": [
    {
      "other": "ばいたん"
    },
    {
      "ipa": "[ba̠itã̠ɴ]"
    }
  ],
  "word": "煤炭"
}

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        "1": "ja",
        "2": "ltc",
        "3": "煤炭",
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      },
      "expansion": "Middle Chinese 煤炭",
      "name": "der"
    }
  ],
  "etymology_text": "Middle Chinese 煤炭",
  "forms": [
    {
      "form": "煤炭",
      "ruby": [
        [
          "煤",
          "ばい"
        ],
        [
          "炭",
          "たん"
        ]
      ],
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  "pos": "noun",
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          "coal",
          "coal"
        ]
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  ],
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    {
      "other": "ばいたん"
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    {
      "ipa": "[ba̠itã̠ɴ]"
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  ],
  "synonyms": [
    {
      "roman": "sekitan",
      "ruby": [
        [
          "石炭",
          "せきたん"
        ]
      ],
      "word": "石炭"
    }
  ],
  "word": "煤炭"
}