feature_synonym

the pub_id link is for relating the usage of a given synonym to the publication in which it was used

typically a synonym exists so that somebody querying the db with an obsolete name can find the object theyre looking for (under its current name. If the synonym has been used publicly & deliberately (eg in a paper), it my also be listed in reports as a synonym. If the synonym was not used deliberately (eg, there was a typo which went public), then the is_internal boolean may be set to -true- so that it is known that the synonym is -internal- and should be queryable but should not be listed in reports as a valid synonym