"四角形" meaning in Japonais

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms communs en japonais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Japonais",
      "orig": "japonais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de 四, shi (« quatre »), 角, kaku (« angle ») et 形, kei (« figure »)."
  ],
  "hyponyms": [
    {
      "word": "平行四辺形"
    },
    {
      "word": "長方形"
    },
    {
      "word": "正方形"
    },
    {
      "word": "菱形"
    },
    {
      "word": "台形"
    }
  ],
  "lang": "Japonais",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "word": "三角形"
    },
    {
      "word": "角形"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en japonais de la géométrie",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Quadrangle, quadrilatère."
      ],
      "id": "fr-四角形-ja-noun-m~yLO70-",
      "topics": [
        "geometry"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɕi.kak.keː\\"
    },
    {
      "ipa": "\\ɕi.ka.kɯ.keː\\"
    }
  ],
  "synonyms": [
    {
      "word": "四角"
    },
    {
      "word": "四辺形"
    }
  ],
  "word": "四角形"
}

{
  "categories": [
    "Noms communs en japonais",
    "japonais"
  ],
  "etymology_texts": [
    "Composé de 四, shi (« quatre »), 角, kaku (« angle ») et 形, kei (« figure »)."
  ],
  "hyponyms": [
    {
      "word": "平行四辺形"
    },
    {
      "word": "長方形"
    },
    {
      "word": "正方形"
    },
    {
      "word": "菱形"
    },
    {
      "word": "台形"
    }
  ],
  "lang": "Japonais",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "word": "三角形"
    },
    {
      "word": "角形"
    }
  ],
  "senses": [
    {
      "categories": [
        "Lexique en japonais de la géométrie"
      ],
      "glosses": [
        "Quadrangle, quadrilatère."
      ],
      "topics": [
        "geometry"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɕi.kak.keː\\"
    },
    {
      "ipa": "\\ɕi.ka.kɯ.keː\\"
    }
  ],
  "synonyms": [
    {
      "word": "四角"
    },
    {
      "word": "四辺形"
    }
  ],
  "word": "四角形"
}