In order to understand heat is work we can take example of electric heater in which whenever electricity passes through, then an electric field establishes on it and causes some work to heat. i.e., compensation of work is nothing but heat. This my explanation about the difference between heat...
I coincide with above explanations. If we take two bar magnets near to each other, then like magnet poles repel each other and dislike poles attract each other.-narasimha charyulu