abandoned
aged
alloy
backdrop
background
corrode
corroded
cracked
dark
deserted
dirty
distressed
filthy
flake
flaking
grunge
grungy
hard
heavy
hideous
industrial
iron
mangy
metal
metallic
nasty
old
pattern
plate
retro
rotten
rough
rust
rusted
rusty
scabby
scratch
scratched
sheet
spot
stain
stainless
steel
surface
texture
tough
ugly
wall
weathered
worn