The World Dictionary

elemental vs neutral:

elementals are more closely tied to an  element and they are better in that they can utilize the element to its  full potential but the cons are that they are also weaker to certain  elements and can use fewer elements

neutrals can use a wide variety of elements but cannot fully master any, they also arent as weak to certain elements

opposite elementals:

a rare elemental that wields opposite elements

the opposite pairs are

wind/earth : usually good at navigating all terrain, very fast and agile but also bulky, not a glass cannon

water/fire:  tends to live in the tropics

ice/fire: tends to live in the desert or other harsh climates, survivalists, usually weak to water

light/dark:  tend to be associated with illusions

True Elements:

wind:  element of air, breezes, the sky

earth: element of rocks, dirt, crystals, sand

water: element of water, mainly in lakes/rivers and the sea types of places

fire: element of molten metal, lava, fire, heat, summer

ice: element of the cold, ice, snow, winter

lightning: element of technology, storms, lightning, electricity, energy

light: element of the sun, day

dark: element of the moon, night

Pseudo-elements:

Life: element of nature, healing, medicine, peace

Nature: element of plants, animals, etc

Death: element of disease, decay, war, poison, curses

Poison: element of chemistry, chemicals, venom, poison, etc