This is the 8633rd most frequent Korean word.
가시는구나
"You are leaving."
In this sentence, '가시는구나' indicates recognition of someone's departure in a respectful tone.
가시는구나, 어머니.
You are leaving, Mother.
Here, '가시는구나' is used to acknowledge someone's action of departing to a specific location with respect.
가시는구나 학교로.
You are leaving to go to school.
In this sentence, '가시는구나' highlights the realization of a final departure in a respectful manner.