purpose goal aim三个词都是“目的”的意思,怎么区别? 可以互用吗

有区别
What is the purpose of his visit?
他来访的目的是什么?
purpose是指意图.
It is now our aim to set up a factory.
我们现在的目的是创办一座工厂.
My goal in life is to help others.
我的人生目标是帮助他人.
goal和aim的分别,我用英文来解释.
Aim is often used in the sense of shooting at a target and refers to the accuracy of the shot as in:Aim an arrow at the board.Goal is very often an abstract concept for something you want to achieve and of course it is used in sports like football.
Another difference between goal and aim might be that goal is a noun whereas aim can be used as a noun as well as a verb.
goal通常比较抽象,aim则比较趋向一个比较specific的目标.
在运动比赛里,我们都用goal.
另外,goal 只能当作名词来用,而aim则可以是名词或动词.
It is now our aim to set up a factory.（名词）
We aim to set up a factory.（动词）