When to use window side in Korean
Korean: 창가[ chang-ga ]

When to use it
창가 means the area next to a window or a seat by the window. You use it to talk about where something is or where someone sits. For example, you can say a plant is by the window or ask for a window seat (창가).
Example sentences
창가에 화분이 있어요.
There is a flowerpot by the window.
저는 교실 창가에 앉아요.
I sit by the window in the classroom.
창가에서 비를 봐요.
I watch the rain by the window.
카페에서 창가 자리로 갈까요?
Shall we go to the window-side seat in the cafe?
식당에서 창가 자리가 좋아요.
I like a table by the window at restaurants.
기차에서 창가 자리를 예약했어요.
I reserved a window seat on the train.