14.1.1—(thermal) energy is transferred from a region of higher temperature to a

When two regions have different temperatures, thermal energy is transferred from the hotter region to the colder until equilibrium is reached.

Temperature indicates the direction of net thermal transfer; the mechanism may be conduction, convection or radiation.

A hot metal block in cooler water loses thermal energy while the water gains it, even if the block contains less total energy.

Heat is energy in transfer, not a substance stored in an object, and transfer direction is not set simply by which object has more energy.