Authoritarianism refers to the centralization of all powers to a single authority whereas totalitarianism refers to the equal distribution of powers to every single power holders and a balanced condition. The concept of totalitarianism has come after world war I.
Totalitarianism differs from the concept of authoritarianism. It believes in giving or allowing much less individual freedom. Authoritarianism clearly make distinction between state and society whereas Totalitarianism is a modified from of extreme authoritarianism.
