The Spanish word 'camalote', which refers to the water hyacinth plant, comes directly from Classical Nahuatl 'camalotl', meaning 'water plant'. This is one of many words that Spanish borrowed from Nahuatl, the language of the Aztec Empire, after the Spanish conquest of Mexico. The Spanish adaptation simply involved dropping the final '-tl' sound, which is common in Nahuatl but doesn't exist in Spanish, and replacing it with '-te'.

Since 'camalote' comes from Nahuatl rather than Latin or Greek roots, there aren't many other common Spanish words that share its etymology. This is typical of words borrowed from indigenous American languages, which form their own distinct word families separate from the Indo-European vocabulary that makes up most of Spanish.

There aren't any etymologically related English words, as this term comes from Nahuatl. However, English speakers might be familiar with other Nahuatl loanwords like 'chocolate' (from 'xocolatl'), 'tomato' (from 'tomatl'), and 'avocado' (from 'ahuacatl').