abstract
adhesion
cleft
construction
crack
cracked
cut
defect
fence
fissure
fracture
incomplete
industrial
industry
iron
junction
material
metal
metallic
old
paint
plate
rough
rust
rusty
scrap
shrinkage
solid
stainless
steel
surface
suture
texture
undercooked pulp
vintage
weathered
weld
welded
welding
white
work