adult

and

architect

between

business

communication

construction

contemporary

contractor

distribution

electricity

electrification

electro

energy

engineer

equipment

fluorescently

foreman

goggles

helmet

high

industrial

industry

job

line

man

men

occupation

outdoors

person

phone

power

professional

protective

radio

real

safety

site

specialist

supervisor

talkie

talking

talks

teamwork

technology

time

transmission

voltage

walkie

wire

wiring

work

worker

workman

yellow