"tứ dân" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "四",
        "2": "four",
        "3": "民",
        "4": "people"
      },
      "expansion": "Sino-Vietnamese word from 四 (“four”) and 民 (“people”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 四 (“four”) and 民 (“people”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "tứ dân",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "tứ dân",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Sino-Vietnamese words",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Sino-Vietnamese words with uncreated Han etymology",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Vietnamese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Vietnamese nouns without classifiers",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "vi",
          "name": "Four",
          "orig": "vi:Four",
          "parents": [
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "vi",
          "name": "People",
          "orig": "vi:People",
          "parents": [
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Meronyms: công (“artisans/craftsmen”), nông (“peasants/farmers”), sĩ (“intelligentsia/intellectuals”), thương (“merchants”)"
        }
      ],
      "glosses": [
        "the four hierarchical tầng lớp (“social groups”) in feudal East Asia"
      ],
      "id": "en-tứ_dân-vi-noun-N87sfn~g",
      "links": [
        [
          "tầng lớp",
          "tầng lớp#Vietnamese"
        ]
      ],
      "raw_glosses": [
        "(historical, collective) the four hierarchical tầng lớp (“social groups”) in feudal East Asia"
      ],
      "tags": [
        "collective",
        "historical"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[tɨ˧˦ zən˧˧]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[tɨ˨˩˦ jəŋ˧˧]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[tɨ˦˥ jəŋ˧˧]",
      "tags": [
        "Hồ-Chí-Minh-City"
      ]
    }
  ],
  "word": "tứ dân"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "四",
        "2": "four",
        "3": "民",
        "4": "people"
      },
      "expansion": "Sino-Vietnamese word from 四 (“four”) and 民 (“people”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 四 (“four”) and 民 (“people”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "tứ dân",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "tứ dân",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Sino-Vietnamese words",
        "Sino-Vietnamese words with uncreated Han etymology",
        "Vietnamese collective nouns",
        "Vietnamese entries with incorrect language header",
        "Vietnamese lemmas",
        "Vietnamese nouns",
        "Vietnamese nouns without classifiers",
        "Vietnamese terms with IPA pronunciation",
        "Vietnamese terms with historical senses",
        "vi:Four",
        "vi:People"
      ],
      "examples": [
        {
          "text": "Meronyms: công (“artisans/craftsmen”), nông (“peasants/farmers”), sĩ (“intelligentsia/intellectuals”), thương (“merchants”)"
        }
      ],
      "glosses": [
        "the four hierarchical tầng lớp (“social groups”) in feudal East Asia"
      ],
      "links": [
        [
          "tầng lớp",
          "tầng lớp#Vietnamese"
        ]
      ],
      "raw_glosses": [
        "(historical, collective) the four hierarchical tầng lớp (“social groups”) in feudal East Asia"
      ],
      "tags": [
        "collective",
        "historical"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[tɨ˧˦ zən˧˧]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[tɨ˨˩˦ jəŋ˧˧]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[tɨ˦˥ jəŋ˧˧]",
      "tags": [
        "Hồ-Chí-Minh-City"
      ]
    }
  ],
  "word": "tứ dân"
}