Achras is a term that has limited synonyms, as it is a rare and specific word. However, it can be considered a synonym for the word "sapodilla," which is a fruit-bearing tree from the Sapotaceae family that is native to Central America. Other terms that may be considered related to achras include "naseberry," "chiku," and "mudapples," as these words are often used to describe various cultivars of Sapodilla trees. While achras may not have many synonyms, it is a unique and intriguing word that has a rich and exotic history. Its rarity only adds to its mystique and allure.