Laws made by judges in courts. When a case appears before them, they must make a judgement and this forms the law. It must be followed in similar cases in the future.
This called ‘common law’, that is judge made law.
There is a court hierarchy system and lower courts must abide by the decisions and rules made by higher courts.
Statutory interpretation
This is where judges in senior courts are called upon to interpret words and phrases within a law. They have the ability to interpret the meaning of the law and made a verdict on the case.