abstract
black
blue
bright
brilliant
business
construction
crafts
craftsman
danger
dangerous
dark
engineering
equipment
face
factory
fire
flash
guy
hot
industrial
industry
iron
labor
laborer
light
man
manufacture
manufacturing
metal
person
plant
power
protection
skill
skilled
space
spark
sparkle
steel
tech
technical
technology
weld
welder
welding
wire
work
worker
workshop