abstract
aged
backdrop
background
barrier
black
brown
corrosion
cracked
damaged
dark
detail
dirty
frame
grunge
grungy
industrial
industry
iron
material
messy
metal
metallic
obsolete
old
paint
pattern
plate
red
resin
retro
rough
rust
rusted
rustic
rusty
scratched
shabby
sheet
stain
stained
stains
steel
surface
texture
textured
vintage
wall
weathered
worn