The following are all considered gods, only some are bound and subservient to others and are smaller vessels of power.

Diety - A great consciousness that has near unlimited power. This power is invested in the Wards who are vessels of power of a Diety in a realm. Dieties rarely interest themselves directly in a single realm, instead their Wards act in their behalf.

Ward - An aspect of a Diety, who has a separate consciousness and near unlimited power over specific aspects, or domains, of a Diety. A Ward is a protector and guardian to a gods power in a specific sphere, and serves the interest of the true god in granting powers and abilities to priests and clerics in this world. A ward of combat would know limitless power of the sphere of combat, but would need to still request abilities of healing from a Ward over Healing as any other cleric.Wards usually are vested in one or more realms.

Avatar - A material and spiritual projection of a Ward or Diety in a realm. Avatars, as figments of the host god, are limited in power and can be destroyed. Manifesting an Avatar is rare. For most mortals, Avatars are gods, and there is no separation. Death to an Avatar is very taxing on a Diety. If a Diety loses an Avatar, a new one cannot be manifested for a year and a day.

Realms in the multiverse.

Inner Planes - all realms that fall within the etherial barrier.

Outer Planes - all realms that lie outside the etherial barrier.

Etherial Barrier - a construct of the great Dieties to separate the Inner Planes from the Outer Planes. Since it required the limitless energy of the nine Dieties, no single Diety can destroy it. The Etherial Barrier also contains the Arc of Time, which measured the beginning of measurable time. Before the barrier existed, the multiverse was timeless. Moving through the etheral plane is very hazardous, space itself has no meaning (it is uncoordinated). A being can simply travel by moving about and manipulatiing the terrain to be what they expect it to be. If they wish to travel to the far places of the material plane, they only need know what it looks like exactly, and slowly change the environment around them to be what they would see if they were there. The smallest errors can lead a traveller into the demi planes of shadow never to see the material plane again. At the very least the traveller would need to be very intelligent and wise before attempting travel here, or use magical guides.

Gray Waste - There is a region of the etheral plane known as the Gray Waste. This void area has no ground, nor sky, and is utterly featureless. Trapped creatures spend an eternity here going mad. It is said that this waste borders the material and planes of the dead, and that worthy souls can find the path to their realm in the afterlife.

The following are definitions of aspects of power.

Hability - a infusion of power from a Diety giving a permanent supernatural ability to a mortal

Of Gods and Wards...
The true gods of this world are restricted from entering the world of men due to a barrier that was placed long ago by the gods themselves so that their wars and conflicts do not destoy the arc of time and end existence as we know it. The true gods do not concern themselves to much in this realm, except to garner followers so that in death the souls will belong to the patron god in the next realm. Since there is a need for stability and representation, the gods have delegated their power in mortals that have ascended and become something near-immortal. These avatars can serve many stations, some as messengers, some as caretakers. The most important role of a follower can be that of a Ward. A Ward is a protector and guardian to a gods power in a specific sphere, and serves the interest of the true god in granting powers and abilities to priests and clerics in this world. A ward of combat would know limitless power of the sphere of combat, but would need to still request abilities of healing from a Ward over Healing as any other cleric. When a cleric prays for spells from a god, they must satiate the needs of each ward they pray to. In many cases this is simply not an issue, as a follower of the true god usually gets what they want. But sometimes the aspirations or idealls of wards tend to conflict, and a dutiful servant will get caught in the middle. A wonderful example is a worshipper of a Lathandar, Ward over Nature who wants healing spells in the winter, which is ruled by Lathandars nemesis, Shakak. Since Shakak is dominant in the winter, death sphere spells are easy to find, but healing may be refused.. Again, since Shakak is weak in the spring and summer, death and destruction spells are at a premium and may not be granted.

All of the true gods have retreated to the outer planes but one, Bel-Tyr. This god remained behind to heal the world and gave life to a number of creatures that are known as spirits and not souls, including gnomes, elves, and dwarves. Bel-tyrs wards are the seasons, the earth and moon, and the druids and clerics that follow Bel-Tyr respect the life in all things, from trees to mountains and lakes. The other gods have all retreated to their respected planes and struggle continually for dominance in the afterworld.

Of the etheral barrier...
The etheral barrier is actually the barrier created by the gods out of need that they can no longer pass through. Simply put, beings of great power can not pass through the etheral barrier nor affect the material plane. The etheral barrier is timeless in that time tends to pass at its own whim. It is without bounds and encompases all of the material planes and can be used to move to the outer planes of the afterworld and subplanes of the elements. Creatures that walk both in the etheral and material plane simultaneously are spectral creatures that are wholly unnatural, more likely a cursed soul or foul creation of the gods. Moving through the etheral plane is very hazardous, space itself has no meaning. A person can simply travel by moving about and manipulatiing the terrain to be what they expect it to be. If they wish to travel to the far places of the material plane, they only need know what it looks like exactly, and slowly change the environment around them to be what they would see if they were there. The smallest errors can lead a traveller into the demi planes of shadow never to see the material plane again. At the very least the traveller would need to be very intelligent and wise before attempting travel here, or use amgical guides.

There is a region of the etheral plane known as the gray waste. This void area has no ground, nor sky, and is utterly featureless. Trapped creatures spend an eternity here going mad. It is said that this waste borders the material and planes of death and life, and that worthy souls can find the path to their realm in the afterlife.

On the subplanes of Fire, Air, Earth, and Water
Each subplane is a component of the material plane, and only differs in that it lacks the element of the other plane. Fire opposes Water, and Air opposes Earth. Traveling to the plane of Fire requires powerful magics to protect the being or spirit of an individual while removing elemental water from the being. Such a transition transforms the being to an elemental state, where they can enter that realm, in this case the plane of elemental fire, home of the Djinn. These planes have their own gods and laws.

On the demiplanes of Shadow.
Even the plane of Fire has its own elementals. Earth, and Water, and Shadow Elementals. If one were to recast the spell to travel to Elemental Earth while being a being of elemental fire, he is then twice removed from the Prime Material Plane. A being thrice removed becomes a being of pure Elemental Fire, and only Shadow Elementals are known. If again elemental Fire is removed, then you are on the plane of shadow, and noone has returned from there to witness the world contained within it. Shadow beings are truly monstrous, able to drain the life force from planar creatures. They are known as wraiths, wights, and ghosts.

On teleporting...
It is not possible to just teleport in my world. Only elves have been able to open up gates within this plane, but the most common form of travelling quickly is through the etheral planes.