in accordance with和according to有什么区别?能任意互换嘛?

可以互换，本来就是同义词

都是根据的意思、
但是,
in accordance with 多用于根据一条规矩,系统 如：Article 47 may only be used in accordance with international law./Use this product only in accordance with the manufacturer's instructions.
according to 的用法多一些
1.根据某人
如：According to the police,his attackers beat him with a blunt instrument.
2.根据一个情况
如：You will be paid according to the amount of work you do.
3.根据计划,规则
如：Everything went according to plan,and we arrived on time.