Difference Between watch | notify ?

[Scor1937]

what is the difference Between watch  |  notify  bottom ?

[Lutpin]

Watch adds threads to your watchlist: https://bitcointalk.org/index.php?action=watchlist
Notify enables email notification about new posts: https://bitcointalk.org/index.php?action=profile;sa=notification

[LoyceV]

Is it possible to remove a tread from my "Show new replies to your posts."-list, other than deleting all my replies in that thread?

[Lutpin]

Is it possible to remove a tread from my "Show new replies to your posts."-list, other than deleting all my replies in that thread?

As far as I know, No.
If you want a list of threads you can modify, use the watchlist.
Enable "Automatically watch topics after replying to them." in your notification settings, and remove those you don't want to follow any longer.