abstract
alloy
aluminum
background
banner
border
brutal
clean
damaged
design
dirty
flat
frame
glossy
gray
grayscale
grey
grunge
grungy
highlight
horizontal
industrial
iron
ironworks
light
material
metal
old
panel
paper
pattern
plate
polish
precious
reflection
rust
scratch
sheet
shine
shiny
silver
smooth
stainless
steel
style
surface
technology
template
texture