alert
attention
background
banner
barricade
barrier
beware
black
board
card
caution
chemical
collection
concept
danger
dangerous
do not enter
forbidden
frame
hand
hazard
icon
illustration
japan
japanese
keep out
label
mark
message
poison
poster
prohibition
radiation
risk
safety
security
set
sign
signal
skeleton
skull
stop
stripe
template
text
toxic
vector
warning
yellow
zone