Русско-англо-русский юридический словарь

However, when it comes to describing specific kinds of work, there’s a difference in nuance between “amount” and “volume.” In particular, lots of work of an abstract nature such as reading, thinking, or surveillance is more precisely described as “a large amount of work,” while lots of measurable physical work like loading a pile of boulders into a truck is more precisely described as “a large volume of work.” (Jose Carillo's English Forum)