Hebrew law only has one main principle: what is hateful to you, do not do to another. This is the entire Torah. The rest is details. Now go study.
Some of the main laws in Egypt include criminal law, family law, labor law, and commercial law. The Egyptian legal system is based on a combination of Islamic law, Napoleonic Code, and civil law principles. The Constitution of Egypt is the supreme law of the land.
Boyle's Law, Charles's Law, and Archimedes principle are the main principles. Study those and that should get you started.
Contract law is a large and complex area of the law. You can find a summary of the main principles of contract law by visiting the Wikipedia page titled English contract law.
Law = Chok (חוק)
Constitutional law is mainly concerned with the structure of the primary organs of government. Constitutional law is also concerned with the fundamental principles according to which a state or organization is governed.
The three main principles of the Petition of Right are: the prohibition of non-parliamentary taxation, the banning of arbitrary imprisonment, and the restriction of the use of martial law during peacetime.
If you are asking what the Hebrew word for the Five Books of Moses is, it's the Torah (תורה). If you are asking what the Hebrew word is for the phrase "the law", it's ha-khok (החוק)
Deen (דין) is the Hebrew word for Law.
The Romans applied the law to all of their citizens. Some of the principles of Roman law was that everyone is equal before the law and that nobody is above the law.
The two main systems of law in use today are civil law and common law. Civil law is based on a codified set of laws and emphasizes the principles of legal codes and statutes. Common law, on the other hand, relies on judicial decisions and precedents to establish legal principles.
The entire Torah.
Daughter-in-law = כלה (kah-LAH).