Ondolbang: A room that heats the entire floor through a flue of a hypocaust when a fire is started in the fireplace. It is a heating system developed in Korea and China’s East Northern area, Mongolia, etc
Balkoni: The balcony is an external extension of an upper floor of a building in the western architecture.
Gajeongbubang: The word literally refers to the room for a housemaid. During the 1960s-70s, young women from suburban areas moved to Seoul and worked as housemaids for wealthy families. They were offered accommodations, usually staying in a side room.
Deureseu room: dressing room
Byeonso: it’s an old term indicating toilet or sanitation used for disposal of human urine and feces.