Symbolism

Everyday symbols

100

Wheelchair spaces

A place that must be given up for people with disabilities

200

An arrow on the road

The direction to turn

300

Fire in a diamond 

Flammable hazard

400

Skull and cross bones

Poison

500

An M with a point at the end

Scorpio (zodiac sign)

Logos

100

A slanted tick

Nike

200

A green W

Woolworth's

300

A green robot

Android 

400

Rainbow Peacock

NBC

500

A bunny

Playboy Bunny

Mythological symbols

100

Lightning bolt

Zeus

200

A trident

Posioden

300

A circle with a dot in the middle

The sun

400

An egg

Fertility

500

A 'T' with a circle on top

Life