{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/words/refs/heads/main/json-schema/words-frequency-schema.json",
  "title": "Frequency",
  "description": "Corpus-derived frequency information for a word.",
  "type": "object",
  "properties": {
    "zipf": {
      "type": "number",
      "format": "double",
      "description": "Zipf-scale frequency score (typically 1\u20137).",
      "example": 4.83
    },
    "perMillion": {
      "type": "number",
      "format": "double",
      "description": "Average number of occurrences per million corpus tokens.",
      "example": 67.61
    },
    "diversity": {
      "type": "number",
      "format": "double",
      "description": "Likelihood (0\u20131) that the word appears in a randomly chosen document.",
      "example": 0.17
    }
  }
}