sentences:  Due to its broad etymology, the term rumba historically retained a certain degree of polysemy.By the end of the 19th century, Cuban peasants ("guajiros") began to perform "rumbitas" during their parties (guateques, changüís, parrandas and "fiestas patronales").These songs were actually in the form of urban guarachas (not proper rumbas), which had a binary meter in contrast to the ternary meter of traditional rural genres such as tonada and zapateo.