abstract
alloy
background
braid
brown
bunch
bundle
cable
close
closeup
coil
corrosion
decay
detail
dirty
elevator
grey
grunge
industrial
industry
iron
ironworks
irony
lift
line
lode
metal
old
pack
pattern
pile
pilfer
puller
rope
rough
rust
rusty
snake
sneak
steel
stowage
strand
strong
technology
tendon
texture
tow
tug
wire