The phrase "gold piece" is often used to describe a unit of currency made entirely of gold. However, there are many different synonyms for this term that can be used to describe a gold coin or monetary unit. Some of the most commonly used synonyms for "gold piece" include terms such as gold coin, gold nugget, or even a gold bar - which typically refers to a larger, rectangular-shaped piece of gold bullion. Other potential synonyms for "gold piece" might include terms like gold ingot, gold bullion, or just simply "a piece of gold." Ultimately, the term "gold piece" can be used interchangeably with a number of different words and phrases when describing a unit of gold currency.