seize
accessory
base
big
bolt
build
building
built
closeup
column
component
construction
detail
edifice
engineering
equipment
factory
fasten
gray
hard
hold
industrial
industry
iron
item
material
metal
metallic
metaphor
modern
nut
object
outdoor
part
pillar
pole
power
safety
screw
solid
stability
stainless
steel
strength
strong
structure
stud
support
tower