Bed coals can be described using a variety of synonyms, each with their own specific connotations. Some synonyms for bed coals include embers, cinders, and ashes. Embers typically refer to small, glowing fragments of heated wood or coal that have been burned and are still hot. Cinders are residual particles, usually black or gray, that remain after fuel has been burned, and are typically left after a fire has gone out. Ashes are another synonym for bed coals, and refer to the fine particles that are left over after wood or coal have been burned. Each of these synonyms provide a different description of bed coals depending on their context, and can be used to provide more nuance and detail in writing.