"language change" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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      "categories": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
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            "Entries with incorrect language header",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Linguistics",
          "orig": "en:Linguistics",
          "parents": [
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
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        }
      ],
      "glosses": [
        "The process of alteration in the features of a single language, or of languages in general, across a period of time."
      ],
      "id": "en-language_change-en-noun--xxx~rOG",
      "links": [
        [
          "linguistics",
          "linguistics"
        ]
      ],
      "raw_glosses": [
        "(linguistics) The process of alteration in the features of a single language, or of languages in general, across a period of time."
      ],
      "related": [
        {
          "word": "historical linguistics"
        },
        {
          "word": "sound change"
        }
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      "tags": [
        "uncountable"
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      "topics": [
        "human-sciences",
        "linguistics",
        "sciences"
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      "wikipedia": [
        "language change"
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  "word": "language change"
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  "lang_code": "en",
  "pos": "noun",
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    {
      "word": "historical linguistics"
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    {
      "word": "sound change"
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        "The process of alteration in the features of a single language, or of languages in general, across a period of time."
      ],
      "links": [
        [
          "linguistics",
          "linguistics"
        ]
      ],
      "raw_glosses": [
        "(linguistics) The process of alteration in the features of a single language, or of languages in general, across a period of time."
      ],
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        "uncountable"
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        "human-sciences",
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