abstract
aged
alloy
ancient
backdrop
background
board
brown
construction
damaged
decay
design
dirty
effect
frame
grain
grime
grunge
industrial
industry
iron
material
messy
metal
metallic
obsolete
old
oxidate
panel
pattern
plaque
plate
rough
rust
rusted
rusty
scratch
scratched
sheet
spot
stain
steel
surface
texture
textured
tile
vintage
wall
wallpaper
weathered