aim means what u wan't to become in ur life what u wan't to achieve.
actually aim goal n target r quite similar terms.
vision means long time planning considering all plus minus points. n mission is a plan which u wan't to achieve n is a war that u wan't to win over.
target is the final goal at the highest point.
1. Vision/Mission - where are you headed? (e.g. beyoud the project duration)
2. Target/Aim - End Result (e.g. when the project is over)
3. Goal/Objectives - What High Level Achievements are needed to reach Target
There can be many other divisions of these similar meaning words, it depends a lot on context.
aim: purpose or intention
goal: objective toward which an endeavor is directed
vision: the way in which one conceives of something
mission: a self imposed duty
target: a desired goal
So basically aim, goal, and target are the same. The vision is how you see you self getting there and the mission is getting yourself there. Wherever your there may be.