慣かん習しゅう法ほう

noun

common law

In domestic legal contexts, refers to judge-made law based on precedent, as opposed to statutory law.

• 英えい米べい法ほうでは慣かん習しゅう法ほうが重じゅう要ような役やく割わりを果はたす。

  Common law plays an important role in Anglo-American legal systems.

noun

customary international law

In international law, refers to rules that have become binding through consistent state practice and opinio juris.

• 国こく際さい慣かん習しゅう法ほうは、国こっ家かの一いっ般ぱん的てき慣かん行こうから生しょうじる。

  Customary international law arises from the general practice of states.