abstraction

air

background

black

chemistry

cloud

disappears

disco

dissolves

effect

example

flow

fog

frame

gas

haze

incense

isolated

jet

large

left

machine

mist

motion

movement

nobody

pollution

pressure

process

side

slow

slowly

smog

smoke

smoking

smoky

smoothness

smudge

splash

spray

stream

studio

texture

thin

transparent

vapor

vaporizer

visible

wave

white