What's the difference between Dream, Ambition and Greed?

Don't all they mean the same thing?

But Dream is a word you use for yourself, friends, and people that you love.
Ambition, for other people who you don't know so well
Greed, for your enemies :D :D

---KnightCross, 7th May 2017
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+1 y
i don't want to reply any person below but the point of my question is:what makes something to be more than you need? for example: having the goal to become a billionaire is that dream, ambition or greed?(not saying this is my goal lol)
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+1 y
well, since nobody could not enlighten me in this question and change my mind about that, I will give MHO to the first opinion who says "whatever :)"... you can write it as comment if you have already given ur opinion
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+1 y
the first ones who says MEE earns MHO
What's the difference between Dream, Ambition and Greed?
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