Function: Creates or modifies a taxonomy object.

Function: Builds an object with all taxonomy labels out of a taxonomy object.

Function: Add an already registered taxonomy to an object type.

Function: Creates the initial taxonomies.

Function: Remove an already registered taxonomy from an object type.

Function: Retrieve object_ids of valid taxonomy and term.

Function: Retrieves a list of registered taxonomy names or objects.

Function: Given a taxonomy query, generates SQL to be appended to a main query.

Function: Return the names or objects of the taxonomies which are registered for the requested object or object type, such as a post object or post type name.

Function: Get all Term data from database by Term ID.

Function: Retrieves the taxonomy object of $taxonomy.

Function: Checks that the taxonomy name exists.

Function: Determines whether the taxonomy object is hierarchical.