Spader is a fairly specific word, referring primarily to a type of digging tool or a person who works with such a tool. However, there are a few related words that can be used as synonyms in certain contexts. For example, a spade may also be referred to as a shovel, although the two terms can have slightly different meanings depending on the region and context. A person who uses a spade or shovel might be referred to as a gardener, landscaper, or excavator. In some cases, the word "spader" might also be used more broadly to refer to someone who works with other types of digging or excavation tools, in which case words like "digger" or "trencher" might be appropriate synonyms.