abstract
alloy
aluminium
aluminum
antique
art
background
bar
border
brush
burnish
clip
clipart
design
durable
grunge
hard
heavy
highlight
horizontal
industrial
industry
iron
line
material
metal
metallic
modern
old
pattern
plate
polish
row
sheet
shine
shiny
smooth
square
stainless
steel
straight
string
style
surface
template
texture
tough
wall