These nouns refer to what one plans to do or achieve.
Intention simply signifies a course of action that one proposes to follow: It is my intention to take a vacation next month.
Intent more strongly implies deliberateness: The executor complied with the testator's intent.
Purpose strengthens the idea of resolution or determination: "His purpose was to discover how long these guests intended to stay" (Joseph Conrad).
Goal may suggest an idealistic or long-term purpose: The college's goal was to raise ten million dollars for a new library.
End suggests a long-range goal: The candidate wanted to win and pursued every means to achieve that end.
Aim stresses the direction one's efforts take in pursuit of an end: The aim of most students is to graduate.
An object is an end that one tries to carry out: The object of chess is to capture your opponent's king.
Objective often implies that the end or goal can be reached: The report outlines the committee's objectives.