What is the exact difference between Refrigerator and a air conditioner ?

This are the2-different system of cooling. Both are essential for the daily need in our life. 

a. Refrigerator.  This is used to frost / de frost the  eatable items. Fruits / Vegetable / Fish / Mutton / etc.Also we used Thermoking for the vehicle for transit one city of another state.

b. Air condition.  This is used for the cooling system in our home  to keep the temperature cool as per the climate.  This system also used in laxury cars & Busses. That will not make frost or harm to human body. 

Refrigeration refers to processes that take thermal energy away from a place and gives off that energy to a place with a higher temperature. Naturally, thermal energy flows from a place with a higher temperature to a place with a lower temperature. Therefore, refrigeration runs against the natural heat flow and so it requires work to be done. Refrigerator is a name that we use for devices that are used to keep food at low temperatures. A refrigerator consists of a fluid called refrigerantwhich gets expanded and compressed in a cycle:

1. When refrigerant enters the compressor, the refrigerant is compressed adiabatically. This raises the temperature of the refrigerant.
2. Then, the hot refrigerant is sent into the condenser under high pressure, which is typically a tube outside the refrigerator. Here, the temperature of the refrigerant is higher than the temperature of the surroundings. So, the refrigerant gives off heat to the surroundings and gets condensed into a liquid. If you touch the tubes at the back of a refrigerator, it feels hot because you are feeling the heat given out by the condenser.
3. Next, the refrigerant goes through an expansion valve, where the pressure of the refrigerant is lowered. The refrigerant expands here, evaporating and cooling down.
4. The refrigerant now enters the evaporator, which is a set of tubes inside the refrigerator. At this stage, the refrigerant is at a temperature lower than the temperature of the air inside the refrigerator. Now, the refrigerant draws in heat from inside the refrigerator. This is how heat is removed from inside a refrigerator.

Once the refrigerant goes through the evaporator, it is sent again into the compressor… and the cycle continues repeatedly.

Air conditioning is a type of refrigeration where thermal energy is taken away from the air in a large space such as a room or a vehicle. Air conditioners are fitted into rooms so that they cool the air inside them. Air conditioners also reduce humidity in rooms, because the water vapour in the room can condense around the colder parts of the air conditioner. The condensed water can be then drained off.

Air conditioners work in the same way as refrigerators. The primary difference between an air conditioner and a refrigerator is that air conditioners are not only concerned with maintaining the temperature of the air; they also help to regulate humidity and filte the air. Air conditioners also consist of fans in order to circulate air, so that the hot air comes into contact with the evaporator at a faster rate.

A refrigerator is a device which encloses a small defined area usually a large cabinet with a cooling device to cool the interior of this cabinet to keep its contents cool.

A Air Conditioner is a device which is installed in rooms and like which cools and controls the enviorement of these rooms

Function of both is to maintain air temperature by acting against the law of relieving thermal energy from low temperature to high temperature zone but in addition Air conditioner also controls humidity.

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