Ruff
This is a stroke predessed by three ghost notes. (according to Guildhall School of Music and Drama) e.g 3 semiquavered ghost notes (not part of the beat; decoration if you will) followed by a prominet stroke.
Drag
Same as above except with two strokes predesesing the prominet stroke (according to Guildhall School of Music and Drama)
This is a stroke predessed by three ghost notes. (according to Guildhall School of Music and Drama) e.g 3 semiquavered ghost notes (not part of the beat; decoration if you will) followed by a prominet stroke.
Drag
Same as above except with two strokes predesesing the prominet stroke (according to Guildhall School of Music and Drama)