abstract
aged
ancient
art
background
brown
brushed
chemistry
color
corroded
corrosion
damaged
dark
dented
descriptive
dirty
frame
grunge
grungy
hard
industry
material
messy
metal
metallic
old
pattern
plate
product
red
rough
rust
rustic
rusty
sheet
stain
steel
style
surface
texture
textured
time
weathered
worn