The Spanish word 'coyol', which refers to a species of palm tree, comes from the Nahuatl (Aztec) word 'coyolli'. In Nahuatl, 'coyolli' had two meanings: it could refer to a small bell or to this specific type of palm tree. The palm tree meaning was borrowed into Spanish, while the bell meaning was not retained. This borrowing likely occurred during the Spanish colonization of Mexico, when many Nahuatl words entered Spanish vocabulary, particularly for local plants and animals.

Since 'coyol' comes from Nahuatl rather than Latin or Greek roots, there aren't many etymologically related simpler Spanish words. This is common for Spanish words describing New World plants and animals, which often preserve their original indigenous names.

There aren't any common English words directly related to 'coyol', as it comes from Nahuatl. However, English has borrowed this word in scientific contexts, where the palm species is sometimes referred to as 'coyol palm', maintaining its original Nahuatl-derived name.