Natural, peculiarity:
this peculiarity, on weapons and armor, means that the object is part of the fighter. Typical examples are the horns, fangs or fur of a creature.
Not Hit, condition:
this condition indicates when the target is not hit, following a turn of combat. Many events have this condition (or its opposite, hit) as a prerequisite to activate their effects.
Not Wounded, condition:
this condition indicates when the target is not wounded, which is hit or not is irrelevant, following a turn of combat. Many events have this condition (or its opposite, wounded) as a prerequisite to activate their effects.