If I'm reading R&C correctly per encounter powers are called battle prayers and per day powers are called spells (but I'm not positive on this one). Healing powers are called healing words and occupy their own slots. Clerics also have rituals, for non combat powers like healing persistent conditions, creating wards and raising the dead.
Incidentally, I hope that in 4th edition it will be harder to die, but raise dead gets bumped up as a high end epic power.