core + attic (Attic Area): these terms have been either deprecated from the core or extentions, or removed from pending as not accepted into the full vocabulary.


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Thing > Property > keywords

Keywords or tags used to describe this content. Multiple entries in a keywords list are typically delimited by commas.

Usage: Between 250,000 and 500,000 domains
Values expected to be one of these types
Used on these types

Schema Version 3.3