"UE" meaning in Catalan

{
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "UE f",
      "name": "ca-proper noun"
    }
  ],
  "lang": "Catalan",
  "lang_code": "ca",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "European Union",
          "word": "Unió Europea"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Catalan entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Catalan feminine nouns with no feminine ending",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "ca",
          "name": "European Union",
          "orig": "ca:European Union",
          "parents": [
            "Europe",
            "Earth",
            "Eurasia",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of Unió Europea. (European Union)"
      ],
      "id": "en-UE-ca-name-N1mgBQCI",
      "links": [
        [
          "Unió Europea",
          "Unió Europea#Catalan"
        ],
        [
          "European Union",
          "European Union#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "feminine",
        "initialism"
      ]
    }
  ],
  "word": "UE"
}

{
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "UE f",
      "name": "ca-proper noun"
    }
  ],
  "lang": "Catalan",
  "lang_code": "ca",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "European Union",
          "word": "Unió Europea"
        }
      ],
      "categories": [
        "Catalan entries with incorrect language header",
        "Catalan feminine nouns",
        "Catalan feminine nouns with no feminine ending",
        "Catalan initialisms",
        "Catalan lemmas",
        "Catalan proper nouns",
        "ca:European Union"
      ],
      "glosses": [
        "Initialism of Unió Europea. (European Union)"
      ],
      "links": [
        [
          "Unió Europea",
          "Unió Europea#Catalan"
        ],
        [
          "European Union",
          "European Union#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "feminine",
        "initialism"
      ]
    }
  ],
  "word": "UE"
}