What is the difference between vapour and gas.In chemistry

vapour  is the process of liquid into gas.  let us take example 
when we boil the water, then water converted into gas (water vapour ) 
GAS:-
gas is the property of physical quantity of matter.
its have charactereics like its definite shape and volume . its intermolecular force is very less.
intermolecular distance is very high.


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