The Spanish word 'bossa' comes directly from Portuguese 'bossa', meaning 'rhythm' or 'beat'. This term became widely known through the Brazilian music style 'bossa nova' (literally 'new beat' or 'new trend') that emerged in the late 1950s. When the word entered Spanish, it retained its association with this distinctive musical style.

Since 'bossa' is a relatively recent borrowing from Portuguese specifically related to music, there aren't many simpler or more common Spanish words that share its etymology.

The English language has also borrowed the word 'bossa' in the context of 'bossa nova' music, though it's typically used as part of this compound term rather than on its own. English speakers might recognize this word from terms like 'bossa nova' or 'bossa rhythm' in musical contexts.