grou - high
- ground fog
- ground frame
- ground frost
- ground gasoline
- ground gear
- ground geophysics
- ground glass
- ground glass (focusing )camera
- ground glass (focusing )camera
- ground glass joint
- ground glass retouching
- ground glass screen
- ground glass viewing
- ground gravimeter
- ground grid
- ground grip tread pattern
- ground guidance
- ground handling facilities
- ground hog kiln
- ground hold
- ground ice mound
- ground idle
- ground indicator
- ground instantaneous field of view
- ground inversion
- ground isolation
- ground joint
- ground joist
- ground layer
- ground lead
- ground leak
- ground leakage
- ground level
- ground level concentration
- ground lightning strike
- ground load
- ground location
- ground log
- ground loop
- ground magnetics