bin
bottle
clean
clear
concept
conservation
container
dirt
dirty
drink
dump
dustbin
earth
eco
ecology
environment
environmental
garbage
green
heap
household
industry
junk
litter
management
material
object
old
outdoor
package
pile
plastic
pollution
recovery
recyclable
recycle
reduce
reprocess
reuse
rubbish
scrap
sunlight
symbol
throwing
transparent
trash
used
waste
water