Which arm of the government in Australia has power to interpret and apply laws?

In Australia, the arm of the government that has the power to interpret and apply laws is the judiciary. The judiciary is composed of the courts and judges who are responsible for interpreting and applying the laws of the land. The courts have the authority to hear cases, decide on the outcome of disputes, and enforce the law. The judiciary is an important part of the Australian government as it ensures that laws are applied fairly and consistently, and that the rights of citizens are protected.