The Spanish word 'viola' comes from Italian 'viola', which ultimately derives from Latin 'viŏla'. In Latin, 'viŏla' had two meanings: it referred to both the violet flower and a musical instrument. The musical instrument meaning was carried through Italian and into Spanish, where 'viola' specifically refers to the viola - the string instrument that's slightly larger than a violin but smaller than a cello.

The Spanish word 'violeta' (violet, the flower or color) is related to 'viola', as they share the same Latin root 'viŏla'. While 'viola' took on the musical instrument meaning, 'violeta' retained the connection to the flower and color. Similarly, 'violín' (violin) is part of the same word family, all stemming from the association with the violet flower - possibly due to the purple-tinted varnish historically used on these instruments.

English speakers will recognize several cognates: 'violet' (both the flower and the color), 'viola' (the musical instrument), and 'violin' all share the same Latin ancestor 'viŏla'. The connection between these words and the violet flower has been maintained across languages and centuries, though the musical instrument terms have developed their own specific meanings.