environmental
automobile
bright
cabin
car
cargo
cartoon
clean
cleaner
conservation
container
dump
eco
ecology
environment
equipment
flat
full
garbage
green
huge
illustration
industrial
industry
isolated
junk
lamp
machinery
management
metal
nature
powerful
recycle
rubbish
sanitation
service
special
symbol
transport
transportation
trash
truck
trunk
urban
vehicle
waste
wheel
window
yellow