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You're not wrong I took my brother last month and the day after he bought a pistol and planning on regular games. This month I took my son and he was so eager he was going to buy a pistol on the day It's that instantaneously addictive.
There is no pronunciation distinction, only spelling.
One for people that don't know better and one for people that should know better. But online in(computer game spaces) I mercilessly block anyone which says noob or n00b to me as abuse. But if the same people say 'newb' I be like "sorry, yeah".