3d
accident
advice
alarm
alert
attention
beware
button
careful
cartoon
caution
construction
danger
dangerous
design
disable
error
exclamation
failure
gray
guard
hazard
icon
illustration
importance
important
information
internet
isometric
label
mark
message
notice
point
precaution
problem
red
risk
road
safety
secure
security
sign
signal
stop
symbol
triangle
warning
web