This is the 10752nd most frequent Korean word.
귀가를
Returning home.
'귀가를' here is used as an object of the verb '합니다' (does), meaning 'return home' as an action.
그는 매일 정해진 시간에 귀가를 합니다.
He returns home at a fixed time every day.
'귀가를' is used as the object of '서둘렀습니다' (hurried), referring to the act of going home.
비가 많이 와서 귀가를 서둘렀습니다.
Because it was raining hard, I hurried my return home.
'귀가를' is part of the clause '귀가를 할 때' (when returning home), describing the action of going home.