potential energy of an object is determined by the mass and the height of the object
potential_energy_function is function. potential_energy is energy. potential_energy_function is not binary_function. energy_of_object_predicate is physical_measure. elastic_energy is potential_energy. potential_energy is mechanical_energy. energy_of_object_predicate is not physical_measure. potential_energy_function is binary_function. chemical_energy is potential_energy.