"ngữ nguyên học" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "語源學",
        "t": ""
      },
      "expansion": "語源學",
      "name": "m"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "語源學",
        "suffix": "học"
      },
      "expansion": "Sino-Vietnamese word from 語源學",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 語源學.",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "ngữ nguyên học",
        "tr": ""
      },
      "expansion": "ngữ nguyên học",
      "name": "head"
    },
    {
      "args": {
        "head": "ngữ nguyên học"
      },
      "expansion": "ngữ nguyên học",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Sino-Vietnamese words",
          "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": "other",
          "name": "Vietnamese terms suffixed with -học",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "vi",
          "name": "Linguistics",
          "orig": "vi:Linguistics",
          "parents": [
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "etymology"
      ],
      "id": "en-ngữ_nguyên_học-vi-noun-EwVtKhKo",
      "links": [
        [
          "linguistics",
          "linguistics"
        ],
        [
          "etymology",
          "etymology"
        ]
      ],
      "qualifier": "study",
      "raw_glosses": [
        "(dated, linguistics, study) etymology"
      ],
      "synonyms": [
        {
          "word": "từ nguyên học"
        }
      ],
      "tags": [
        "dated"
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ŋɨ˦ˀ˥ ŋwiən˧˧ hawk͡p̚˧˨ʔ]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[ŋɨ˧˨ ŋwiəŋ˧˧ hawk͡p̚˨˩ʔ]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[ŋɨ˨˩˦ ŋwiəŋ˧˧ hawk͡p̚˨˩˨]",
      "tags": [
        "Hồ-Chí-Minh-City"
      ]
    }
  ],
  "word": "ngữ nguyên học"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "語源學",
        "t": ""
      },
      "expansion": "語源學",
      "name": "m"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "語源學",
        "suffix": "học"
      },
      "expansion": "Sino-Vietnamese word from 語源學",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 語源學.",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "ngữ nguyên học",
        "tr": ""
      },
      "expansion": "ngữ nguyên học",
      "name": "head"
    },
    {
      "args": {
        "head": "ngữ nguyên học"
      },
      "expansion": "ngữ nguyên học",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Sino-Vietnamese words",
        "Vietnamese dated terms",
        "Vietnamese entries with incorrect language header",
        "Vietnamese lemmas",
        "Vietnamese nouns",
        "Vietnamese nouns without classifiers",
        "Vietnamese terms suffixed with -học",
        "Vietnamese terms with IPA pronunciation",
        "vi:Linguistics"
      ],
      "glosses": [
        "etymology"
      ],
      "links": [
        [
          "linguistics",
          "linguistics"
        ],
        [
          "etymology",
          "etymology"
        ]
      ],
      "qualifier": "study",
      "raw_glosses": [
        "(dated, linguistics, study) etymology"
      ],
      "tags": [
        "dated"
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ŋɨ˦ˀ˥ ŋwiən˧˧ hawk͡p̚˧˨ʔ]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[ŋɨ˧˨ ŋwiəŋ˧˧ hawk͡p̚˨˩ʔ]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[ŋɨ˨˩˦ ŋwiəŋ˧˧ hawk͡p̚˨˩˨]",
      "tags": [
        "Hồ-Chí-Minh-City"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "từ nguyên học"
    }
  ],
  "word": "ngữ nguyên học"
}