One important distinction made in all these countries is between private– or civil law and public law. Civillaw concerns disputes among citizens within a country, and publiclaw concerns disputes between citizens and the state, or between one state and another.
The main categories of English civil law are:
Contracts: binding agreements between people (or companies);
Torts: wrongs committed by one individual against another individual's person, property or reputation;
Trusts: arrangements whereby a person administers property for another person's benefit rather than his own Land Law;
Probate:arrangements for dealing with property after the owner's death;
Family Law.
The main categories of public law are:
Crimes: wrongs which, even when committed against an individual are considered to harm the well-being of society in general;
Constitutional Law: regulation of how the law itself operates and of the relation between private citizen and government;
International Law: regulation of relations between governments and also between private citizens of one country and those of another.
In codified systems there are codes that correspond to these categories, for example, France's Code Civil and Code Penal. Justinian's Roman codes covered such areas of law as contracts, property, inheritance, torts, the family, unjust enrichment, the law of persons, and legal remedies, but said little about criminal law. Consequently, most Continental criminal codes are entirely modern inventions.