居 U+05c45 居
Radical: 尸
Decomposition: ⿸尸古
Acjk: 居⿸尸.3古5
Definition: live, dwell, reside, sit
住 U+04f4f 住
Radical: 亻 (人)
Decomposition: ⿰亻主
Acjk: 住⿰亻.2主5
Definition: reside, live at, dwell, lodge; stop
区 U+0533a 区
Radical: 匸
Decomposition: ⿷匸乂
Acjk: 区⿷匸.:1乂2匸.:1
Definition: area, district, region, ward