I suspect these magic systems are not mutually exclusive...
(I see I must acquire Mr. Sandersons' other works, as I have merely read the Mistborn trilogy.)
A brief description, for those who haven't read Elantris or Warbreaker:
In Elantris, some people are taken by the Sheod (change), they become Elantrians. The Elantrians, at the height of their power, could perform magic by drawing runes of varying complexity in the air (or carving in stone, or writing on paper, really). The more specific the effect you wanted, the more complicated the rune.
In Warbreaker, people can use Breaths to Awaken objects. Everybody is born with one Breath, and you usually acquire more by paying other people to give you theirs. The more human looking the thing you're Awakening, the less Breaths it takes to Awaken it. When you Awaken something, you have to give it a command, (usually something simple like "grab things") and it will perform that command to the best of its abilities. A human corpse can be Awakened with a single Breath, making a Lifeless (think more flesh golem than zombie). Lifeless can be given codes and whatnot to 'reprogram' them, unlike other Awakened things.
If you have a certain number of Breaths you achieve a Heightening. The first few are things like perfect pitch and the ability to discern perfect hues of color, I don't recall what the higher ones do. Hightenings tend to require a LOT (as in hundreds) of Breaths.
Also in Warbreaker exist the Returned, people that die and come back with godlike stature and physique. They die if they aren't given a new Breath every week. The Returned have the Fourth or Fifth (I can't recall) Heightening, even though they only have one Breath.