Many lists of objects in FileMaker give us the option to view those objects in alphabetical order. In calculation dialogs, the list of available functions is in alphabetical order (even when you choose to group functions by type), for example. Related objects will cluster together in alphabetically sorted lists if they begin with the same characters. By prefixing related objects with the same word(s), developers can suggest that they represent similar information or that they are inter-compatible in some way.
The general rule of thumb is to name in the direction of general or wider scope to more specific scope. This forces grouping when a list is sorted in alphabetical order.