Premade or alliance

Get it right Premade is made before joining a game. Joining a game without talking to anyone before and u see u have friends in it and u agree to work together...its an alliance. And let be real ...chances u know people in a game are high ...its always the same people joining almost. I join 9 times on 10 alone and still been accused of joining in premade. Know the difference or s**t up.