In Geoza, all deific Origins (i.e. those Origins that are deities) have domains.  The domain of a deity is the conceptual ideal or symbolic meaning of the deity - what that deity is the deity of.   For example, in the Jalani pantheon, Asuan is the god of sea and storms.  The domain of Asuan is anything associated with the sea or with storms (note that the two don't have to be related, necessarily - a sandstorm in the desert is still a storm, and thus would fall within the domain of Asuan).
	Domains can have many different aspects.   Domain aspects can be abstract concepts or ideals, such as love, war, freedom, or peace.  They can be elemental forces, such as light, darkness, fire, or storms.   Aspects can also be activities or processes, such as healing, growth, or prophecy, and they can be places, or types of terrain (mountains, forests) or even groups of people.  Domains may further include concepts that are associated with the primary aspect.  For example, the domain of a goddess of healing might also include childbirth, although that isn't strictly a healing situation.

	The domain of a deity may also include more than one aspect.  Such domains are known as complex domains.  A deity with a complex domain might be the god of fire, evil, and the desert, for example.   Such a domain could include the aspect of the elemental force of fire, the aspect of the concept of evil, and the aspect of the desert (climate/terrain type/location).   Alternately, that combination of domain aspects might imply limitations on each aspect - only the destructive aspect of fire, for example, matching the concept of evil, and only the heat and burning aspects of the desert, matching the elemental force of fire.   Many Geozan deities possess complex domains, and various combinations of concepts will be defined for each.
	Domains are important because they help define the relative power each deific Origin has in a specific situation or circumstance.   A deity whose domain is "god of the Ululu" would have increased power whenever that deity wanted to affect any or all of the Ululu, or to influence anything affecting any or all of the Ululu.  Similarly, a god of storms would have reduced power whenever that deity wanted to affect a tree growing in a calm glade (assuming that no other domain aspects apply).  Domains can overlap.  Consider a situation where an adept of a god of storms is contesting with an adept of a god of the sky.  If one were attempting to summon lightning bolts out of the clouds, and the other was attempting to stop him, the domains of both deities would apply.  Conversely, it is possible that neither domain would apply, as would be the case if the above-mentioned adepts attempted to heal an injured man.
	Whether or not, and to what extent a deity's domain applies in a given situation is known as domain relevance.  Domain relevance to any given situation can be expressed by a value from one to ten, with one being no relevance at all, and ten indicating a situation that is wholly within the domain of the deity.  Note that domain relevance is a temporary and changing value, based on each situation.  In general, deific followers will be most familiar with effects that are within the domain of their deity.  Effects that fall outside that domain will usually be unfamiliar, as well as being harder to accomplish.
	One important component to domain relevance is the relative number of the deity's followers in that area.  Followers of a deity will experience generally lower domain relevance in areas where few followers of that deity live, even in situations where that deity's domain is clearly relevant.  This fact provides a pragmatic motive for proselytizing, even for religions that would not ordinarily have a philosophical motive for doing so.
	Domain relevance may also differ, even in the same circumstances, between domain relevance for the purpose of accessing Omnessence, and domain relevance for the purpose of using that Omnessence.  Using the example of the deity of the storm, an adept who was attempting to heal an injured man during a rainstorm would be able to access the deity's Omnessence with a high domain relevance (he's in the middle of a storm), but would be more limited in using that Omnessence to heal the man (that activity isn't specifically within the domain of the deity).  Conversely, it might take that same adept longer to access Omnessence on a calm, sunny day (low domain relevance), but once accessed, if he wanted to call up a storm, the domain relevance for that action would be high.
	In situations where two or more deities (or their followers, more specifically) are working at cross-purposes (as in the example with the lightning bolts mentioned above), there are three general possibilities:
	1) Both (or all) deities have a high domain relevance for that situation.  In the case of the deities of storm and sky mentioned above, both would have a high domain relevance, although the deity of storms might be considered to have a slight edge in that regard.  Such situations can be extremely chaotic and potentially destructive, as each deity is working from a position of strength, and neither deity will be able to easily overcome the other.
	2) One (or more than one, but not all) deity has a high domain relevance, and the other has a low domain relevance.  In this kind of situation, the deity with the higher relevance will almost always prevail, and the followers of the other deity or deities will have much less ability to affect the situation in any significant way.
	3) Both (or all) deities have low domain relevance.  In the case of the deities of sky and storm attempting to heal an injured man, neither would have much relevance (assuming no other domain aspects applied).   In such circumstances, deities and their followers will have difficulty affecting the situation at all, and any attempt to work at cross-purposes would likely cause both efforts to fail.
	Domain relevance is an important component for all deific Origins.  It may be referenced in several areas of the Origin profiles, including Access, Preparation, and Casting Difficulty.  Adepts who access a deific Origin will need to consider the ideals and symbolic elements of their religion or creed before attempting effects using that Origin.