On the basis of Judicial review, the judiciary can declare any law illegal, which violates the constitution. After some time, the judiciaiy realised that it should also get this power that if the executive ignores its duties due to inaction or adopts the tendency of arbitrary conduct, then the judiciary should give it necessary instructions regarding duty or in the event of arbitrary behaviour, stop it from doing so. In this way, judicial review is the means of preventing arbitrary law-building of the legislature. On the other hand, judicial activism is the means of motivation of the executive in the direction of duty or the means of preventing arbitrary conduct. Judicial activism is a step ahead of the Judicial review, it is a step in which inherent mobility in the system, weaknesses and defects of governance and changing circumstances have given birth to it.
