"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": "other",
          "name": "Pages with 10 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "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",
        "Pages with 10 entries",
        "Pages with entries",
        "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"
}