Ground and earth are both same. This means connected to 
ground ie always remain zero potential. Neutral means tle 
lower potential of the supply source with respect to 
another potential of the same supply source.

GROUND MEANS when small ckt. (control ckt.) are required to 
be connected to common is called ground.
EARTH mean high voltage (power ckt.) are connected to common
(neutral) is called earth.

Grounding/Earthing (both the same) is done for human safety
and Neutral is done for device protection

Ground and earth are same.the current flow in earth/ground 
when fault occurs.

Neutral is used as a return path.  current flow only when 
closed path is there. 
current flow in neutral under normal conditions.

EARTH IS USED FOR PROVIDING THE PATH OF LEACKAGE CURRENT .
NEUTRAL IS USED FOR PROVIDING THE PATH OF REVERSE CURRENT 
GEROUND IS USED FOR THREE PHASE BALANCING SYSTEM.

ground and earth both are common itwii useforsurge 
protection and neutral for return path of the circuit

Neutral provides return/ balancing path for the phase 
currents and completes the circuit. Neutral can also be 
Earthed at source end as per system requirement.
Earth refers to system at mother earth potential, essential 
for human sefety.
Ground refers to virtual earth system in Electronic 
circuitries in appliances as also Aircrafts/ Automobiles, 
etc.