background
barrel
bottle
broken
can
canister
cap
concept
container
copy
danger
day
dirt
dirty
ecology
empty
environment
equipment
flammable
forest
fuel
full
gallon
garbage
gasoline
gray
green
heat
industrial
industry
liquid
natural
nature
nobody
object
oil
old
one
outdoors
park
petrol
plastic
pollution
product
reservoir
single
table
tank