What is the difference between 잠이 오다, 졸리다?

Modersmålets svar
Rebecca
'잠' means that your eyes are closed and your conscious activities are relaxed, and '졸리다' means that you feel like sleeping. After all, '잠이 오다' and '졸리다' are the same expressions that can be used in the same situation. In this scene, the boss is having trouble falling asleep after secretary Kim's request to resign. You can switch it to ‘왜 이렇게 안졸리지?’