Noob means a newbie, but idiots are using it wrong. Repeated over, and over, and over, and over again, it's old and the most annoying word in existence. To me personally, noob is also a crappy player who barely tops the score lists because of extensive drugging. The same players always get mowed down on one-on-one situations without drugs. Pro is someone who has gained a high rank via hard work and is able to play very well in all kinds of scenarios. A pro knows all the little beneficial tricks in the various stages, and is able to find best spots. A pro knows that in flag carrying, defense is also required and there are bad and good spots to defend. Mastering the turret-turning with movement completely is required to be a pro.