"RK" meaning in Hungarian

{
  "etymology_templates": [
    {
      "args": {
        "1": "hu",
        "2": "római katolikus"
      },
      "expansion": "Initialism of római katolikus",
      "name": "initialism"
    }
  ],
  "etymology_text": "Initialism of római katolikus. Sometimes rendered \"RK.\" or \"R.K.\".",
  "head_templates": [
    {
      "args": {
        "1": "hu",
        "2": "noun",
        "3": "",
        "4": "",
        "5": "",
        "6": "RK{{{1}}}",
        "7": "",
        "8": "{{{alt}}}",
        "head": "",
        "nopalindromecat": ""
      },
      "expansion": "RK",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "RK",
      "name": "hu-noun"
    }
  ],
  "lang": "Hungarian",
  "lang_code": "hu",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Hungarian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "hu",
          "name": "Roman Catholicism",
          "orig": "hu:Roman Catholicism",
          "parents": [
            "Catholicism",
            "Christianity",
            "Abrahamism",
            "Religion",
            "Culture",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Roman Catholic"
      ],
      "id": "en-RK-hu-noun-kf8cD8CU",
      "links": [
        [
          "Roman Catholic",
          "Roman Catholic"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈroːmɒjikɒtolikuʃ]"
    }
  ],
  "word": "RK"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "hu",
        "2": "római katolikus"
      },
      "expansion": "Initialism of római katolikus",
      "name": "initialism"
    }
  ],
  "etymology_text": "Initialism of római katolikus. Sometimes rendered \"RK.\" or \"R.K.\".",
  "head_templates": [
    {
      "args": {
        "1": "hu",
        "2": "noun",
        "3": "",
        "4": "",
        "5": "",
        "6": "RK{{{1}}}",
        "7": "",
        "8": "{{{alt}}}",
        "head": "",
        "nopalindromecat": ""
      },
      "expansion": "RK",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "RK",
      "name": "hu-noun"
    }
  ],
  "lang": "Hungarian",
  "lang_code": "hu",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Hungarian entries with incorrect language header",
        "Hungarian initialisms",
        "Hungarian lemmas",
        "Hungarian nouns",
        "Hungarian terms with IPA pronunciation",
        "Hungarian terms with manual IPA pronunciation",
        "Pages with 2 entries",
        "Pages with entries",
        "hu:Roman Catholicism"
      ],
      "glosses": [
        "Roman Catholic"
      ],
      "links": [
        [
          "Roman Catholic",
          "Roman Catholic"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈroːmɒjikɒtolikuʃ]"
    }
  ],
  "word": "RK"
}