1. SHORT CIRCUIT (sometimes abbreviated to short or s/c) allows a charge to flow along a different path from the one intended. The electrical opposite of a short circuit is an open circuit, which is infinite resistance between two nodes. It is common to misuse "short circuit" to describe any electrical malfunction, regardless of the actual problem.
Unintentional short circuits are usually caused when a wire's insulation breaks down, or when another conducting material is introduced, allowing charge to flow along a different path than the one intended.

2.Fuse is a type of over current protection device.Its essential component is a metal wire or strip that melts when too much current flows. When the fuse elements blows, the indicating pin extends to activate the micro switch or relay which in turn triggers an event.

3.Circuit breakers operates once and then has to be replaced, a circuit breaker can be reset(either manually or automatically)to resume normal operation.

3.An electrical overload is a situation where the wiring to or within a machine or system is subjected to a greater electric current load than it was designed to carry, leading to excessive heating of the wire and a possibility of fire.This excessive current load can be a result of electrical insulation failure( a short circuit) or human error.a correctly designed electrical system incorporates suitable overload protection devices to prevent damage should such a situation occur.Fuses and circuit breakers are most commonly employed for this purpose.

6.In an electrical overload,it leads to excessive heating of the wires and a possibility of fire.In a short circuit,an accidental low resistance connection between two nodes of an electrical circuit that are meant to be at different voltages. This results in an electric current limited only by the Thevenin equivalent resistance of the rest of the network and potentially causes circuit damage, overheating,fire or explosion.Although usually the result of a fault, there are cases where short circuits are caused intentionally, for example, for the purpose of voltage-sensing crowbar circuit protectors.

7.The dangers of short circuit are it can cause fires which can damage things and will even caused lives. It can cause so much trouble to the family and community. It will destroy appliances in the house and will ruin properties because of the fire it caused.We should really try our best to avoid short circuit and overload by maintaining our appliances at constant state and provide it a better care so that in the end we will not suffer the consequences of it.