allowed
background
banner
basket
bin
board
can
caution
clean
do
dump
environment
forbidden
garbage
glossy
icon
illustration
isolated
keep
label
litter
littering
not
outline
person
pictogram
placard
please
pollution
recycle
refuse
restricted
rubbish
seal
sign
silhouette
stamp
sticker
throw
throwing
trash
use
warning
waste