"seguro social" meaning in Spanish

{
  "forms": [
    {
      "form": "seguros sociales",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "seguro social m (plural seguros sociales)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "seguridad social"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Mexican Spanish",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "United States Spanish",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of seguridad social"
      ],
      "id": "en-seguro_social-es-noun-NGZEcxbO",
      "links": [
        [
          "seguridad social",
          "seguridad social#Spanish"
        ]
      ],
      "raw_glosses": [
        "(Mexico, US) Alternative form of seguridad social"
      ],
      "tags": [
        "Mexico",
        "US",
        "alt-of",
        "alternative",
        "masculine"
      ]
    }
  ],
  "word": "seguro social"
}

{
  "forms": [
    {
      "form": "seguros sociales",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "seguro social m (plural seguros sociales)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "seguridad social"
        }
      ],
      "categories": [
        "Mexican Spanish",
        "Pages with 1 entry",
        "Pages with entries",
        "Spanish countable nouns",
        "Spanish entries with incorrect language header",
        "Spanish lemmas",
        "Spanish masculine nouns",
        "Spanish multiword terms",
        "Spanish nouns",
        "United States Spanish"
      ],
      "glosses": [
        "Alternative form of seguridad social"
      ],
      "links": [
        [
          "seguridad social",
          "seguridad social#Spanish"
        ]
      ],
      "raw_glosses": [
        "(Mexico, US) Alternative form of seguridad social"
      ],
      "tags": [
        "Mexico",
        "US",
        "alt-of",
        "alternative",
        "masculine"
      ]
    }
  ],
  "word": "seguro social"
}