Capoeira is a Brazilian martial art. It is a complex cultural phenomenon, containing an original martial art style reminiscent of motion dance with acrobatic elements, accompanied by original music.
Salsa has been very popular since the early seventies of the 20th century. The name of salsa has been used since the late sixties of the 20th century to describe the type of Hispanic music, based on Cuban sono and other types of Caribbean music along with jazz and other American rhythms.
Zouk is a dance practiced today in every continent, being spread through the whole world by professionals. Zouk is danced by moving basically the head of tempos (which many dance teachers simply call time).