"composition book" meaning in English

{
  "forms": [
    {
      "form": "composition books",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "composition book (plural composition books)",
      "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",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A stock-bound notebook, traditionally with a marbled black-and-white cover."
      ],
      "id": "en-composition_book-en-noun-veDqlCKU",
      "links": [
        [
          "notebook",
          "notebook"
        ],
        [
          "marbled",
          "marbled"
        ]
      ],
      "related": [
        {
          "word": "exercise book"
        }
      ],
      "synonyms": [
        {
          "word": "composition notebook"
        }
      ],
      "wikipedia": [
        "composition book"
      ]
    }
  ],
  "word": "composition book"
}

{
  "forms": [
    {
      "form": "composition books",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "composition book (plural composition books)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "exercise book"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns"
      ],
      "glosses": [
        "A stock-bound notebook, traditionally with a marbled black-and-white cover."
      ],
      "links": [
        [
          "notebook",
          "notebook"
        ],
        [
          "marbled",
          "marbled"
        ]
      ],
      "wikipedia": [
        "composition book"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "composition notebook"
    }
  ],
  "word": "composition book"
}