@Lal,
Vanishing/disappearing : of course it’s the same.
“This is done not to embarrass you” : no worries Lal, i’m not “embarrassable.”
As for your questions, i’ll answer tomorrow using my own vocabulary – except perhaps for two concepts, for which i might use Pali words.
Now i’m not saying that what i have to say is the right / good answer (if not you’ll correct me -it’s by doing mistakes that one learns) , it will simply be my own sãnnã.