In most countries the difference is defined in law and in most, non-alcoholic does not mean 100% alcohol-free.
In everday life, the difference will be down to the individual - many observant...
The easiest way to tell is to stop drinking. If you cannot do so, or are uncomfortable, or experience mood swings when you do, there could be a problem. Another way is to simply consider how you...
That is a matter of semantics. Certainly alcoholics run the risk of re-activating their disease if they start drinking again, but those who recover usually are able to re-enter society and function...