apply

builder

building

cement

closeup

concrete

construction

covering

crafts

craftsman

electric

electricity

employee

engineering

equipment

float

floor

gray

grout

industrial

industry

instruments

level

light

machine

machinery

male

man

material

mechnized

occupation

operation

panel

people

plan

plaster

polished

power

process

professional

repair

screed

smoothing

surface

technology

tool

topping

work

worker