In the present work a comparative study have been done between two thermally stimulated processes, namely Thermally Stimulated Depolarization (TSD) and Thermoluminescence(TL). The depolarization current density or ionic thermocurrent density J depends on the rate of depolarization of IV dipoles and the occurrence TL glow curves are goverened by Adirovitch set of equations. The thermally stimulated spectrums of both the processes are of same nature. In this paper the similarities and counter quantities in both the processes have been discussed. It has also been found that the analysis technique, for determination of dielectric relaxation parameters, decay parameters and order of kinetics, are also similar for both processes.