blade
circle
circular
construction
craft
craftsman
cut
cutter
cutting
danger
disc
disk
electric
electrical
equipment
factory
fire
flame
flash
flying
grind
grinder
heat
industrial
industry
iron
light
manufacture
manufacturing
mechanic
metal
power
processing
protection
saw
sawing
spark
sparkle
speed
steel
structure
technical
technology
tool
welder
welding
wheel
work
worker
workshop