One is total silence when the body, mind and soul are at one - are at peace - and are quiet. There are no thoughts scurrying across, no memos niggling at the back of the mind and nothing poking or needling the soul. All are still creating a sense of complete and restful calm.
There is another silence when words hang in the air like drops of water waiting to condense on the nearest surface regardless of time and place and who's around.
And there is another silence which is sheer hostility - where the words though unspoken, ping on your vulnerabilities and send out barbs of deep hurt, never mind who is around...