I'm designing a game where, when players perform spcial game actions, their die rolls can receive bonuses. For instance, if you roll a 4 and have a +1 bonus, your final result is 5.
Now, some of these bonuses stack while others do not. Whether a bonus stacks depends on the effect that supplied the bonus.
By "stack," I mean "multiple bonuses combine into a larger bonus." If a player gets a +1 stacking bonus, a +1 stacking bonus, a +3 non-stacking bonus, and a +3 non-stacking bonus, the two +1 bonuses combine into a +2 bonus. The player is allowed to apply this combined bonus and one non-stacking bonus to his roll. In this case, he would increase his roll by +5 in total.
I don't think "stacking" is a very good word for this, however, so I'm looking for another word that can describe the bonuses that combine.
Any suggestions are welcome.