Elasticsearch query that creates a word cloud from a partition of social media posts

Elasticsearch Word Cloud Aggregation

GET posts/_search
{
  "query": {
    "bool": {
      "must": [
        {
          "match": {
            "partitionKey.keyword": "9e6f80e6-d834-4d63-a37d-1845e90b4007"
          }
        },
        {
          "terms": {
            "postType": ["Like", "Post", "Reply", "Repost"]
          }
        }
      ]
    }
  },
  "size": 0,
  "aggs": {
    "cloud": {
      "terms": {
        "field": "content.stop",
        "size": 20
      },
      "aggs": {
        "avg_sentiment": {
          "avg": {
            "field": "sentiment"
          }
        }
      }
    }
  }
}