The Spanish word 'ocelote' comes directly from the Nahuatl (Aztec) word 'ocelotl', which meant 'tiger'. Nahuatl was the language of the Aztec empire, and many words for native American animals and plants entered Spanish through contact with Nahuatl speakers during the colonial period. While the Nahuatl word was used more broadly for 'tiger', in Spanish it came to specifically refer to the ocelot, a medium-sized wild cat native to the Americas.

Since 'ocelote' comes from Nahuatl rather than Latin or Greek roots, there aren't many etymologically related simpler Spanish words. This is common for words that Spanish borrowed from indigenous American languages.

The English word 'ocelot' is actually borrowed from Spanish 'ocelote', so they're directly related! When you see an ocelot in an English text or hear someone talk about this spotted wild cat in English, you're using a word that traveled from Nahuatl through Spanish into English. The slight difference is that English dropped the final 'e' that Spanish retained.