The term rumba may refer to a variety of unrelated music styles. Originally, "rumba" was used as a synonym for "party" in northern Cuba, and by the late 19th century it was used to denote the complex of secular music styles known as Cuban rumba. Since the early 20th century the term has been used in different countries to refer to distinct styles of music and dance, most of which are only tangentially related to the original Cuban rumba, if at all. The vague etymological origin of the term rumba, as well as its interchangeable use with guaracha in settings such as bufo theatre, is largely responsible for such worldwide polysemy of the term. In addition, "rumba" was the primary marketing term for Cuban music in North America, as well as West and Central Africa, during much of the 20th century, before the rise of mambo, pachanga and salsa.