"ein und derselbe" meaning in All languages combined

{
  "etymology_templates": [
    {
      "args": {
        "1": "de",
        "2": "la",
        "3": "unus et idem",
        "nocap": "1"
      },
      "expansion": "calque of Latin unus et idem",
      "name": "cal"
    }
  ],
  "etymology_text": "Possibly a calque of Latin unus et idem.",
  "head_templates": [
    {
      "args": {
        "1": "de",
        "2": "determiner"
      },
      "expansion": "ein und derselbe",
      "name": "head"
    }
  ],
  "lang": "German",
  "lang_code": "de",
  "pos": "det",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "German determiners",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "German entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "He always talks about one and the same topic.",
          "text": "Er redet immer nur von ein und demselben Thema.",
          "type": "example"
        }
      ],
      "glosses": [
        "one and the same"
      ],
      "id": "en-ein_und_derselbe-de-det-K1fQQAFf",
      "links": [
        [
          "one and the same",
          "one and the same"
        ]
      ]
    }
  ],
  "word": "ein und derselbe"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "de",
        "2": "la",
        "3": "unus et idem",
        "nocap": "1"
      },
      "expansion": "calque of Latin unus et idem",
      "name": "cal"
    }
  ],
  "etymology_text": "Possibly a calque of Latin unus et idem.",
  "head_templates": [
    {
      "args": {
        "1": "de",
        "2": "determiner"
      },
      "expansion": "ein und derselbe",
      "name": "head"
    }
  ],
  "lang": "German",
  "lang_code": "de",
  "pos": "det",
  "senses": [
    {
      "categories": [
        "German determiners",
        "German entries with incorrect language header",
        "German lemmas",
        "German multiword terms",
        "German terms calqued from Latin",
        "German terms derived from Latin",
        "German terms with usage examples",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "english": "He always talks about one and the same topic.",
          "text": "Er redet immer nur von ein und demselben Thema.",
          "type": "example"
        }
      ],
      "glosses": [
        "one and the same"
      ],
      "links": [
        [
          "one and the same",
          "one and the same"
        ]
      ]
    }
  ],
  "word": "ein und derselbe"
}