Distinguish between the terms 'overloading' and 'short-circuiting' as used in domestic circuits.

Explanation

Short Circuitng. If sometimes a live wire touches neutral wire or earth wire, a large current flows through the circuit due to almost zero resistance of the circuit. This is called short-circuiting.
To save the circuit from damage feared due to over-loading or short-circuiting, a fuse of proper rating is put in each circuit.
Over-Loading. The supply wires as well as wires used in household wiring has a specific rating. The rating of 15 A means that if a current upto 15 A is passed through circuit, there is no likely damaged feared to the circuit. But if a current more than maximum allowed limit is passed, there may be excessive heating of the wires and it may damage the wiring due to excessive heating.