grav - hard
- grave
- grave trap
- gravel
- gravel aggregate
- gravel aggregate bed
- gravel aggregate bed filter
- gravel aggregate filter
- gravel catchment
- gravel cleaner
- gravel dredger
- gravel fill
- gravel filter
- gravel guard
- gravel gun
- gravel hopper
- gravel hopper wagon
- gravel impact
- gravel pit
- gravel plant
- gravel protection
- gravel pump
- gravel sand
- gravel shield
- gravel trap
- gravel working
- gravel-ballast course
- gravel-packed filter
- gravelly sand
- graver
- gravestone
- graveyard
- graveyard orbit
- gravidity
- gravimeter
- gravimetric analysis
- gravimetric determination of mass concentration of suspended particles
- gravimetric feed
- gravimetric measurement
- gravimetry
- gravitation
