Avoirdupois weight unit is a term that is commonly used in the context of measuring weights. There are numerous synonyms that can be used in place of this term. Some of the most commonly used synonyms include pound, kilogram, ounce, stone, ton, and grain. Each of these words represents a different measurement unit that is used to determine the weight of an object. For example, an ounce is a small unit of measurement that is often used to weigh ingredients in a recipe, while a pound is a larger unit that is used to measure the weight of larger objects. Overall, there are many different synonyms for avoirdupois weight unit that can be used depending on the context and the size of the object being weighed.