abstract
alloy
aluminium
aluminum
backdrop
background
bright
brushed
design
dirty
durable
glossy
gray
grey
grunge
hard
heavy
highlight
industrial
industry
iron
line
material
metal
metallic
modern
old
panel
pattern
plate
polished
reflection
rough
rust
sheet
shine
shiny
silver
smooth
space
stainless
steel
strength
strong
surface
texture
textured
tough
wall
wallpaper