latón

brass

Borrowed from Arabic لَاطُون (lāṭūn, “copper, copper alloy”), itself ultimately of Turkic origin, from Old Turkic 𐰞𐱃𐰆𐰣 (l¹t¹un¹, “gold”). Compare Turkish altın, Karakhanid اَلْتُونْ (altūn, “gold”).

hackberry

From Vulgar Latin *lotōnem, derived from Latin lotus, a borrowing from Ancient Greek λωτός (lōtós). Coromines & Pascual posit that the Spanish word's unvoiced /-t-/ is due to borrowing from Aragonese, presumably meaning the Pyrenean varieties that did not lenite intervocalic Latin /p t k/.