rivalopponent什么区别

区别就是两者意思表竞争对手时是一样，其它具体的不同如下

rival中文意思是n.竞争对手;

Their smaller rival is battling to end their duopoly.

规模更小的竞争对手正为结束他们的两强垄断局面而抗争着。

对手;竞争者;反对者;阻止者;

例句

He knocked his opponent down three times in the first round.