Ceremonial laws were all those temporary regulations which pre-figured the gospel.
Sacrificial regulations - pre-figured the remedy for sin; i.e., blood poured out
Food and defilement regulations - pre-figured the nature of sin; i.e., spiritual defilement
Purification regulations - pre-figured the meaning of holiness; set apart--from sin, and to God
The sacrifices, food, defilement and purification laws were the temporary ceremonial laws.