This research concerned the semantics of the root (Th. K. L) and the derivatives in the Holy Quran and showed their connotations in the Koranic context. These became varied between the real material weight and the moral one. The real weight is the one that has a tangible weight which can be weighted and measured, Like material bodies, such as (the two classes jinn's and men) and (it's burdens ) which means all underground like(( treasures and dead's ) whereas incorporeal weight is in the impalpable things that have no gravity like(( sins and transgressions)) also the things that burden the human like debts.