香港法律問題

1)究竟public law and the private law有咩唔同呢
2)點解法令通常會被制定ge
3)jurisdiction of a court or tribunal 哩兩個court有咩唔同
4) the difference between original jurisdiction and appellant jurisdiction
5) 我想問下呢 大陸ge民族法適唔適用係香港嫁