activity

angle

area

beginning

big

building

civil

construction

drill

drilling

driving

engineering

equipment

estate

field

ground

group

heavy

huge

industrial

industry

land

landscape

machine

machinery

mechanization

mire

mission

mud

muddy

new

pile

pillar

pond

process

progress

real

rig

site

soil

special

structure

swamp

team

teamwork

terrain

transform

transformation

water

wide

work

workplace

zone