WHAT IS DIFFERENCE BETWEEN NEUTRAL AND EARTH WIRE IN HOUSE WIRING

WHAT IS DIFFERENCE BETWEEN NEUTRAL AND EARTH WIRE IN HOUSE WIRING- one phase and one neutral  wire are used usually across all appliances to give electrical supply to that appliance. But one earth wire is also laid which is used to connect appliance body earthed. To protect consumer, in case phase wire accidently got touched to appliance’s body  it can give shock to consumer. So to protect consumer, appliance’s  earthed body though earth wire protect consumer because phase current got route though earth wire and so current does not pass though consumer body. In electrical plug of three point most  upper one point is used to connect appliance’s body to earth wire to protect consumer.