Companies law (or the law of business associations) is the field of law concerning companies and other business organizations. This includes corporations, partnerships and other associations which usually carry on some form of economic or charitable activity. The most prominent kind of company, usually referred to as a "corporation", is a "juristic person", i.e. it has separate legal personality, and those who invest money into the business have limited liability for any losses the company makes, governed by corporate law. The largest companies are usually publicly listed on stock exchanges around the world. Even single individuals, also known as sole traders may incorporate themselves and limit their liability in order to carry on a business. All different forms of companies depend on the particular law of the particular country in which they reside.