Complex sentence: The terms "sensible heat" and "latent heat" are not special forms of energy, instead they characterize the same form of energy, heat, in terms of their effect on a material or a thermodynamic system.
Split into simpler sentences: The terms "sensible heat" and "latent heat" are not special forms of energy. Rather, they describe exchanges of heat under conditions specified in terms of their effect on a material or a thermodynamic system.