Secretary is a title often used in organizations to indicate a person having a certain amount of authority, power, or importance in the organization. The term is derived from the Latin word secernere, "to distinguish" or "to set apart", the passive participle (secretum) meaning "having been set apart", with the eventual connotation of something private or confidential, as with the English word secret. A secretarius was a person, therefore, overseeing business confidentially, usually for a powerful individual (a king, pope, etc.).
The official title of the leader of most Communist and Socialist political parties is the "General Secretary of the Central Committee" or "First Secretary of the Central Committee". When a Communist party is in power, the General Secretary is usually the country's de facto leader (though sometimes this leader also holds state-level positions to monopolize power, such as a presidency or premiership in order to constitute de jure leadership of the state), such as China and Cuba.