In
common law partnership is a type of
business entity in which partners share with each other the profits or losses of the business undertaking in which they have all invested. In the
civil law the partnership is a
nominate contract[?] between individuals who, in a spirit of cooperation, agree to carry on a enterprise, contribute to it, by combining property, knowledge or activities and to share its profit.
Partners may have a partnership agreement[?], or declaration of partnership and in some jurisdictions such agreements may be registered and available for public inspection.
People can also be partners in a personal relationship.