abstract
abstraction
atom
background
ball
beam
black
blue
bright
circle
color
colorful
colour
colourful
danger
dark
effect
electric
electrical
electricity
energy
flash
glass
globe
glow
glowing
horizontal
lamp
light
lighting
lightning
magic
neon
night
orb
physics
pink
plasma
power
purple
ray
red
science
scientific
spark
sparkle
sphere
technology
toy
voltage