All the groups in Doodle God?

Answer 1

They don't have names but I'll describe the icons and what is in it:

The Yin Yang symbol(has random things in it)

The picture of a cloud (storm air, ash, dust etc.)

Picture of a cat(animals)

Alcohol bottle and palm tree (mainly alcohol related things)

Pyramid and mask(bricks, cement, wood etc.)

a Rock(earth, clay, stone etc.)

Fire(fire, lava sun etc.)

Plant thingy(grass, tree, reeds etc.)

Jug with pipe(milk, bread, dough, flour, basically food)

Computer and rocket picture (tv, rocket, computer etc.)

Human picture( human, corpse, hero etc.)

Chef hat(more sophisticated food, caviar, pie etc.)

Jobs(policeman, astronaut, journalist etc.)

Science thingys(alien, UFO, virus, mechanism, clock etc.)

Bacteria picture(bacteria, moss, beetle etc.)

Picture of people( random tings; fun, games, law, sin, religion etc.)

Hammer( tools, weapon gun etc.)

Car and plane(vehicles car, boat etc.)

Water ball (sea, water swamp etc.)

Lion and peacock(cat, dog, octopus other random animals)

that's all in the current update(15/8/10)

Answer 2

Here is every element on doodle god.

earth + fire = lava

air + earth = dust

air + fire = energy

energy + air = storm

fire + dust = ash

lava + air = stone

fire + stone = metal

water + stone = sand

energy + metal = electricity

water + air = steam

metal + steam = boiler

fire + sand = glass

water + earth = swamp

fire + water = alcohol

swamp + sand = clay

swamp + energy = life

alcohol + water = vodka

water + life = weeds

swamp + life = bacteria

swamp + weeds = moss

earth + moss = grass

swamp + grass = reed

water + bacteria = plankton

life + sand = seeds

life + ash = ghost

life + stone = egg

egg + earth = dinosaur

dinosaur + fire = dragon

air + egg = bird

swamp + moss = fern

clay + life = golem

golem + life = human

human + fire = corpse

human + human = sex

life + corpse = zombie

zombie + corpse = ghoul

human + energy = wizard

wizard + energy = demigod

seed + earth = tree

human + metal = tools

metal + tools = weapons

weapons + man = hunter

hunter + weapons = warrior

warrior + dragon = hero + blood

blood + human = vampire

fire + clay = bricks

tools + reed = paper

bird + hunter = meat + feather + blood

tree + tool = wood

feather + paper = book

swamp + bacteria = worm + sulfur

tree + fire = ash + ash + coal

coal + boiler = steam-engine

human + alcohol = alcoholic

sand + worm = snake

snake + water = fish

water + coal = oil

plankton + fish = whale

snake + tools = poison

poison + weapon = poisoned weapon

poisoned weapon + human = assassin

wood + tool = wheel

earth + tools = field

field + seeds = wheat

wheat + stone = flour

flour + water = dough

dough + fire = bread

bread + alcohol = beer

sand + egg = turtle

swamp + egg = lizard

wood + wheel = cart

cart + steam engine = locomotive

bird + fire = phoenix

lizard + earth = beast

beast + vampire = werewolf

worm + earth = beetle

fire + grass = tobacco

beetle + sand = scorpion

tobacco + paper = cigarette

wood + water = boat

cart + beast = chariot

hunter + beast = meat + wool + blood

human + clay = ceramics

human + stone = hut

stone + plankton = shell

shell + stone = limestone

limestone + clay = cement

tools + wool = fabric

human + beast = domesticated animal

life + tree = treant

weeds + earth = mushroom

water + cement = concrete

concrete + bricks = house

fish + beast = dolphin

wood + boat = ship

oil + cart = car

car + air = airplane

fabric + human = clothes

air + worm = butterfly

100. storm + bird = thunderbird

glass + house = skyscraper

domestic animal + grass = milk + fertilizer

limestone + fertilizer = saltpeter

saltpeter + sulfur = gunpowder

weapon + gunpowder = firearm

ship + fabric = frigate

ship + steam engine = steamship