abstract
attached
barrier
border
boundary
bracket
braided
bundle
cable
chain
coil
concept
connection
construction
cord
crane
danger
detail
enclosure
engineering
flexibility
flexible
forbidden
guard
heavy
hook
industrial
industry
link
linked
metal
metallic
pack
parallel
power
roll
rope
secure
security
steel
strength
strong
structure
supply
technics
tension
three
tie
twist
wire