NOOBS: Rely on cheap tactics to barely finish second-to-last on the team, and often blame others for their mistakes.
Noobs have no ambition to get better at the game they fail at, and are happy just pissing off the rest of us. Noobs are not limited to low levels, some have become 55 Gold Crosses.
Noobs are found camping with their M203-equipped M16's (standard noob issue), Juggernaut and Last Stand, in the same exact place you just killed them in a few minutes ago.
COMMUNICATING WITH NOOBS: Is not a good idea. The vast majority of encounters often end with noobs being brutal flamed in the pre-game lobbies, as noobs are unintelligent and slow-thinking. Any attempt to communicate with noobs is immediately met with a pre-set list of insults, such as "Shut the fuck up", "You wanna go one-on-one?", "I could rape you", etc.
NEWBS: Honest, humble, polite players who strive to better themselves by playing as a team and seeking the advice of others. Newbs are new to the game, so they don't know, and, when confronted after using noob tactics, apologize for their behavior and immediately cease all noob activity.
COMMUNICATION WITH NEWBS: One of the most pleasant conversations ever on Xbox Live/Playstation Network. When you start talking to them, you realize they are different from noobs, and that they are sorry for their behavior.