"expressive language" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "expressive language (uncountable)",
      "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"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2002, Penny Tassoni, Sheila Riddall-Leech, Diploma in Child Care and Education, Harcourt Heinemann, page 213 http://books.google.com/books?id=xWL0GqzUYloC&pg=PT227&dq=expressive+language+date:1970-2008&lr=lang_en&as_brr=3&sig=kZzyNty1CESsm4GJWVqGnmEjn50",
          "text": "Receptive language is the phrases and vocabulary that we understand, whereas expressive language is what we actually use."
        }
      ],
      "glosses": [
        "Language in any of a number of different modalities such as speech, sign or writing."
      ],
      "id": "en-expressive_language-en-noun-1I-EjuAd",
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "expressive language"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "expressive language (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2002, Penny Tassoni, Sheila Riddall-Leech, Diploma in Child Care and Education, Harcourt Heinemann, page 213 http://books.google.com/books?id=xWL0GqzUYloC&pg=PT227&dq=expressive+language+date:1970-2008&lr=lang_en&as_brr=3&sig=kZzyNty1CESsm4GJWVqGnmEjn50",
          "text": "Receptive language is the phrases and vocabulary that we understand, whereas expressive language is what we actually use."
        }
      ],
      "glosses": [
        "Language in any of a number of different modalities such as speech, sign or writing."
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "expressive language"
}