Amassment refers to the act of accumulating or gathering a large quantity of something. There are several synonyms for the word "amassment" that can be used interchangeably depending on the context. These include accumulation, stockpiling, gathering, hoarding, collection, and aggregation. These words all convey the idea of bringing together or collecting something in large quantities. For instance, someone can amass wealth, a collector can amass a collection of antique items, and a hoarder can quickly amass belongings. Having a rich vocabulary and a range of synonyms to choose from helps to convey meaning more effectively and make writing and speaking more interesting and engaging.