"comparative illusion" meaning in English

{
  "forms": [
    {
      "form": "comparative illusions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "comparative illusion (plural comparative illusions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
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          "langcode": "en",
          "name": "Linguistics",
          "orig": "en:Linguistics",
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            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "glosses": [
        "A kind of comparative sentence that superficially seems acceptable but actually has no clear meaning. Example: \"More people have been to Russia than I have.\""
      ],
      "id": "en-comparative_illusion-en-noun-rrvMvau7",
      "links": [
        [
          "linguistics",
          "linguistics"
        ],
        [
          "comparative",
          "comparative"
        ],
        [
          "sentence",
          "sentence"
        ],
        [
          "acceptable",
          "acceptable"
        ]
      ],
      "raw_glosses": [
        "(linguistics) A kind of comparative sentence that superficially seems acceptable but actually has no clear meaning. Example: \"More people have been to Russia than I have.\""
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "sciences"
      ],
      "wikipedia": [
        "comparative illusion"
      ]
    }
  ],
  "word": "comparative illusion"
}

{
  "forms": [
    {
      "form": "comparative illusions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "comparative illusion (plural comparative illusions)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
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        "en:Linguistics"
      ],
      "glosses": [
        "A kind of comparative sentence that superficially seems acceptable but actually has no clear meaning. Example: \"More people have been to Russia than I have.\""
      ],
      "links": [
        [
          "linguistics",
          "linguistics"
        ],
        [
          "comparative",
          "comparative"
        ],
        [
          "sentence",
          "sentence"
        ],
        [
          "acceptable",
          "acceptable"
        ]
      ],
      "raw_glosses": [
        "(linguistics) A kind of comparative sentence that superficially seems acceptable but actually has no clear meaning. Example: \"More people have been to Russia than I have.\""
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "sciences"
      ],
      "wikipedia": [
        "comparative illusion"
      ]
    }
  ],
  "word": "comparative illusion"
}