The difference of a want and a need

The difference between a want and a need is that when you want something is cause you really just want it for fun. Like a little brother or someone goes up to you or your mom telling you they want it , just for fun or cause their friends have so they have to have it as well. When you need it it;s cause you really need it and you can't survive with out it. Needing something doesn't really depend if someone has it or not. Like if you need clothes cause you don't have any that's something you really need. Like if you need food or you starve to death then that's something you really need or else you die. That's what i think the difference between wanting and needing