What's the Difference Between Refugee and Imigrant?

I would say that i have been a political exile and refugee in some ways, and an imigrant. And there's a big difference between both just explain that? Well, a refugee doesn't doesn't have a choice. A person who needs to leve because feels that his or her life is in danger gets out with the idea of going back. So when you reach another country, which you don't choose, most of the time, you just land there. First of all, you are received with hostility, and then you don't plant roots. You are always ready to go back looking at the past,. wi sick with nostalgia, because you've lost everything.