"carbon trade" meaning in English

{
  "forms": [
    {
      "form": "carbon trades",
      "tags": [
        "plural"
      ]
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  ],
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    {
      "args": {},
      "expansion": "carbon trade (plural carbon trades)",
      "name": "en-noun"
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  "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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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Climate change",
          "orig": "en:Climate change",
          "parents": [
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An instance of carbon emissions trading."
      ],
      "id": "en-carbon_trade-en-noun-w8fnD0QB",
      "links": [
        [
          "carbon emissions trading",
          "carbon emissions trading"
        ]
      ]
    }
  ],
  "word": "carbon trade"
}

{
  "forms": [
    {
      "form": "carbon trades",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "carbon trade (plural carbon trades)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English countable nouns",
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        "en:Climate change"
      ],
      "glosses": [
        "An instance of carbon emissions trading."
      ],
      "links": [
        [
          "carbon emissions trading",
          "carbon emissions trading"
        ]
      ]
    }
  ],
  "word": "carbon trade"
}