Source: Schema.org v30.1 vocabulary. Official wordCount property definition.
What does wordCount mean?
The number of words in the text of the CreativeWork such as an Article, Book, etc.
Used on types (domainIncludes)
Expected value types (rangeIncludes)
Schema.org domainIncludes and rangeIncludes are descriptive guidance, not strict validation prohibitions. Check the official reference for updates.
Related reference
Browse all Schema.org types and properties · Google feature support status