advice
alert
attention
beware
black
button
caution
chemical
danger
dangerous
design
error
exclamation
explosive
fire
flammable
flat
hazard
icon
important
industry
information
internet
isolated
line
linear
logo
mark
message
outline
png
point
problem
radioactive
risk
safety
secure
security
sign
skull
stop
stroke
symbol
toxic
traffic
triangle
vector icons
warning
web
white
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