Function: Adds a new term to the database.

Function: Creates term and taxonomy relationships.

Function: Adds term(s) associated with a given object.

Function: Removes term(s) associated with a given object.

Function: Sanitizes the field value in the term based on the context.

Function: Sanitizes all term fields.

Function: Removes metadata matching criteria from a term.

Function: Retrieves metadata for a term.

Function: Updates term metadata.

Function: Updates metadata cache for list of term IDs.