区别就是两者意思是不一样,具体的不同如下

ouch中文意思是n. 扣环,int. 哎哟(突然疼痛时发出的声音)

Ouch! It cost me one hour and a half.

oops中文意思是int. 哎哟,啊呀(某人摔倒或出了点小差错时的用语)

Just as I finish ringing up an order, a customer will say, "Oops, I forgot to pick up a fresh loaf of bread".