accident
alarm
alert
attention
button
caution
damage
danger
dangerous
endanger
error
exclaim
exclamation
failure
halt
harm
hazard
hazardous
icon
illustration
imperil
information
isolated
mark
message
note
peril
pictogram
post
prevent
prevention
protect
protection
risk
road
safety
secure
security
shape
sign
stop
symbol
threat
traffic
triangle
triangular
warn
white
yellow