"FF. AA." meaning in All languages combined

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "fuerzas armadas"
      },
      "expansion": "Initialism of fuerzas armadas",
      "name": "initialism"
    }
  ],
  "etymology_text": "Initialism of fuerzas armadas.",
  "head_templates": [
    {
      "args": {
        "1": "f-p",
        "head": "FF. AA."
      },
      "expansion": "FF. AA. f pl (plural only)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish pluralia tantum",
          "parents": [
            "Pluralia tantum",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "armed forces"
      ],
      "id": "en-FF._AA.-es-noun-Gi-6~vN7",
      "links": [
        [
          "armed forces",
          "armed forces"
        ]
      ],
      "tags": [
        "feminine",
        "plural",
        "plural-only"
      ]
    }
  ],
  "word": "FF. AA."
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "fuerzas armadas"
      },
      "expansion": "Initialism of fuerzas armadas",
      "name": "initialism"
    }
  ],
  "etymology_text": "Initialism of fuerzas armadas.",
  "head_templates": [
    {
      "args": {
        "1": "f-p",
        "head": "FF. AA."
      },
      "expansion": "FF. AA. f pl (plural only)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Spanish entries with incorrect language header",
        "Spanish feminine nouns",
        "Spanish initialisms",
        "Spanish lemmas",
        "Spanish links with redundant wikilinks",
        "Spanish multiword terms",
        "Spanish nouns",
        "Spanish pluralia tantum",
        "Spanish terms spelled with ."
      ],
      "glosses": [
        "armed forces"
      ],
      "links": [
        [
          "armed forces",
          "armed forces"
        ]
      ],
      "tags": [
        "feminine",
        "plural",
        "plural-only"
      ]
    }
  ],
  "word": "FF. AA."
}