advice
alertness
art
assistance
attention
backdrop
background
barrier
black
caution
childlike
color
colorful
construction
crime
danger
design
exclamation
exclamationpoint
faq
forbidden
geometric
hazard
icon
illustration
internet
outline
pattern
point
police
ribbon
risk
safety
seamless
security
set
sign
simple
solution
stop
strip
symbol
tape
texture
triangle
warning
work
yellow
zone