This is the 6451st most frequent Russian word.
южном
"Южном" is the prepositional form of "южный," meaning "southern" or "in the south."
The word 'южном' is the masculine dative case of 'южный', describing the district ('район') in terms of its location in the south.
Мы жили в южном районе города.
We lived in the southern district of the city.
The word 'южном' indicates the southern direction in which the construction took place.
Он построил дачу в южном направлении.
He built a summer house in the southern direction.
The word 'южном' describes the balcony, specifying its orientation towards the south.