Re: Loud ghost notes (still ghost notes?)
Not really, a ghost note is specifically a low volume note. Otherwise they're just a normal hit that isn't a rimshot, accented or marcato note.
Don't forget that you have a number of dynamic ranges - PP, P, MP, MF, F, FF being the basic six - and anything MP and above really isn't 'ghosted' anymore. Even relatively to playing at what I would consider FF volumes, my ghost notes still stay right down the bottom because of the role they still play in creating the right sound. As soon as I start increasing the volume, the sound texture changes completely.