subjects are called "topics", and the data stored about them depended on their "type", as to how they were classified. For example, an entry for Arnold Schwarzenegger, the former governor of California, would be entered as a topic that would include a variety of types describing him as an actor, bodybuilder, and politician. as of 01 2014, Freebase had approximately 44 million topics and 2.4 billion facts.

Freebase's types are themselves user-editable. Each type had a number of defined predicates,