"Than Đá" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "than",
        "3": "đá",
        "t1": "coal",
        "t2": "rock"
      },
      "expansion": "than (“coal”) + đá (“rock”)",
      "name": "af"
    },
    {
      "args": {
        "1": "vi",
        "2": "zh",
        "3": "石炭",
        "4": "",
        "5": "coal",
        "nocap": "y",
        "tr": "thạch thán"
      },
      "expansion": "calque of Chinese 石炭 (thạch thán, “coal”)",
      "name": "cal"
    },
    {
      "args": {
        "1": "vi",
        "2": "zh",
        "3": "石炭紀",
        "tr": "Thạch Thán kỉ"
      },
      "expansion": "Chinese 石炭紀／石炭纪 (Thạch Thán kỉ)",
      "name": "der"
    }
  ],
  "etymology_text": "than (“coal”) + đá (“rock”), calque of Chinese 石炭 (thạch thán, “coal”), from Chinese 石炭紀／石炭纪 (Thạch Thán kỉ).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "proper noun",
        "head": "Than Đá",
        "tr": ""
      },
      "expansion": "Than Đá",
      "name": "head"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Chinese terms with non-redundant manual transliterations",
          "parents": [
            "Terms with non-redundant manual transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Vietnamese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "vi",
          "name": "Geology",
          "orig": "vi:Geology",
          "parents": [
            "Earth sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Synonym of Các-bon (“Carboniferous”)"
      ],
      "id": "en-Than_Đá-vi-name-LFIBJbgW",
      "links": [
        [
          "geology",
          "geology"
        ],
        [
          "Các-bon",
          "Các-bon#Vietnamese"
        ],
        [
          "Carboniferous",
          "Carboniferous#English"
        ]
      ],
      "raw_glosses": [
        "(geology, dated) Synonym of Các-bon (“Carboniferous”)"
      ],
      "synonyms": [
        {
          "extra": "Carboniferous",
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "Các-bon"
        }
      ],
      "tags": [
        "dated"
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[tʰaːn˧˧ ʔɗaː˧˦]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[tʰaːŋ˧˧ ʔɗaː˨˩˦]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[tʰaːŋ˧˧ ʔɗaː˦˥]",
      "note": "Saigon"
    },
    {
      "homophone": "than đá"
    }
  ],
  "word": "Than Đá"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "than",
        "3": "đá",
        "t1": "coal",
        "t2": "rock"
      },
      "expansion": "than (“coal”) + đá (“rock”)",
      "name": "af"
    },
    {
      "args": {
        "1": "vi",
        "2": "zh",
        "3": "石炭",
        "4": "",
        "5": "coal",
        "nocap": "y",
        "tr": "thạch thán"
      },
      "expansion": "calque of Chinese 石炭 (thạch thán, “coal”)",
      "name": "cal"
    },
    {
      "args": {
        "1": "vi",
        "2": "zh",
        "3": "石炭紀",
        "tr": "Thạch Thán kỉ"
      },
      "expansion": "Chinese 石炭紀／石炭纪 (Thạch Thán kỉ)",
      "name": "der"
    }
  ],
  "etymology_text": "than (“coal”) + đá (“rock”), calque of Chinese 石炭 (thạch thán, “coal”), from Chinese 石炭紀／石炭纪 (Thạch Thán kỉ).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "proper noun",
        "head": "Than Đá",
        "tr": ""
      },
      "expansion": "Than Đá",
      "name": "head"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "Chinese terms with non-redundant manual transliterations",
        "Pages with 1 entry",
        "Vietnamese compound terms",
        "Vietnamese dated terms",
        "Vietnamese entries with incorrect language header",
        "Vietnamese lemmas",
        "Vietnamese proper nouns",
        "Vietnamese terms calqued from Chinese",
        "Vietnamese terms derived from Chinese",
        "Vietnamese terms with IPA pronunciation",
        "Vietnamese terms with homophones",
        "vi:Geology"
      ],
      "glosses": [
        "Synonym of Các-bon (“Carboniferous”)"
      ],
      "links": [
        [
          "geology",
          "geology"
        ],
        [
          "Các-bon",
          "Các-bon#Vietnamese"
        ],
        [
          "Carboniferous",
          "Carboniferous#English"
        ]
      ],
      "raw_glosses": [
        "(geology, dated) Synonym of Các-bon (“Carboniferous”)"
      ],
      "synonyms": [
        {
          "extra": "Carboniferous",
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "Các-bon"
        }
      ],
      "tags": [
        "dated"
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[tʰaːn˧˧ ʔɗaː˧˦]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[tʰaːŋ˧˧ ʔɗaː˨˩˦]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[tʰaːŋ˧˧ ʔɗaː˦˥]",
      "note": "Saigon"
    },
    {
      "homophone": "than đá"
    }
  ],
  "word": "Than Đá"
}