accident
alert
art
attention
beware
bit
board
caution
circle
danger
design
error
exclaim
exclamation
figure
flat
graphic
hazard
health
icon
illustration
important
internet
label
mark
mistake
notice
pixel
point
protection
red
risk
road
round
safety
security
shadow
sign
signal
stop
symbol
traffic
triangle
triangular
warn
warning
web
website
yellow