GeoNames Forum

I try to develop own system for searching cities and administrative divisions.

I wonder why sometimes there is many features that describes the same place/administrative division.

For example take a look at:

http://api.geonames.org/children?geonameId=7530731&username=user_name

This is the children of Polish country, Lubusz (ADM1), Powiat żarski (ADM2)
At the end of XML I see two features (ADM3) with toponymName Żary which is I suppose the same but with diffrent geonameId.

This is not only one situation. Now I'm asking You which one of them are the more important. In the dump the geonameId=7531916 and geonameId=7532206 are very similar. When user type Żary in my input box he gets two results instead of one. Can somebody give me some advice how to handle similar situations? Thank You.