"東日本" meaning in Japonais

{
  "antonyms": [
    {
      "word": "西日本"
    }
  ],
  "categories": [
    {
      "kind": "other",
      "name": "Noms propres en japonais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Régions du Japon en japonais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Japonais",
      "orig": "japonais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de 東, higashi (« est ») et de 日本, Nihon (« Japon »)."
  ],
  "forms": [
    {
      "form": "ひがしにほん",
      "tags": [
        "hiragana"
      ]
    },
    {
      "form": "Higashi Nihon",
      "tags": [
        "transcription"
      ]
    }
  ],
  "hyponyms": [
    {
      "word": "北海道"
    },
    {
      "word": "東北"
    },
    {
      "word": "関東"
    },
    {
      "raw_tags": [
        "partie orientale"
      ],
      "word": "中部"
    },
    {
      "word": "新潟"
    },
    {
      "word": "長野"
    },
    {
      "word": "山梨"
    },
    {
      "word": "静岡"
    }
  ],
  "lang": "Japonais",
  "lang_code": "ja",
  "pos": "name",
  "pos_title": "Nom propre",
  "senses": [
    {
      "glosses": [
        "Japon oriental. Une des deux régions principales du Japon, dont le centre est Tokyo."
      ],
      "id": "fr-東日本-ja-name-cFEKF9ZZ"
    }
  ],
  "sounds": [
    {
      "ipa": "\\çi.ɡa.ɕi.nʲi.hoɴ\\"
    }
  ],
  "word": "東日本"
}

{
  "antonyms": [
    {
      "word": "西日本"
    }
  ],
  "categories": [
    "Noms propres en japonais",
    "Régions du Japon en japonais",
    "japonais"
  ],
  "etymology_texts": [
    "Composé de 東, higashi (« est ») et de 日本, Nihon (« Japon »)."
  ],
  "forms": [
    {
      "form": "ひがしにほん",
      "tags": [
        "hiragana"
      ]
    },
    {
      "form": "Higashi Nihon",
      "tags": [
        "transcription"
      ]
    }
  ],
  "hyponyms": [
    {
      "word": "北海道"
    },
    {
      "word": "東北"
    },
    {
      "word": "関東"
    },
    {
      "raw_tags": [
        "partie orientale"
      ],
      "word": "中部"
    },
    {
      "word": "新潟"
    },
    {
      "word": "長野"
    },
    {
      "word": "山梨"
    },
    {
      "word": "静岡"
    }
  ],
  "lang": "Japonais",
  "lang_code": "ja",
  "pos": "name",
  "pos_title": "Nom propre",
  "senses": [
    {
      "glosses": [
        "Japon oriental. Une des deux régions principales du Japon, dont le centre est Tokyo."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\çi.ɡa.ɕi.nʲi.hoɴ\\"
    }
  ],
  "word": "東日本"
}