Question

how can you say that heat is a form of energy which is transferred between two bodies due to temperature difference?

Answer 1

May be an analogy will help. If two tanks containing water are connected by a pipe, water flows from the tank with higher level to that with lower level of water. Temperature is analogous to water level. Heat capacity is analogous to floor area of the tank. The tank with a larger floor area can hold greater amount of water (for a given water level), but that has nothing to with determining whether and in which direction water will flow.

hope it helps u....