If you stir, you move slightly, for example because you are uncomfortable or beginning to wake up.
微动 • Eileen shook him, and he started to stir. 艾琳摇了摇他,他开始动了动。
If an event causes a stir, it causes great excitement, shock, or anger among people.
轰动; 愤怒 • His movie has caused a stir. 他的电影引起了轰动。