Legal doublet

Have you ever heard someone say something like "will and testament" or "aid and abet"? These are called legal doublets. A legal doublet is when two words that mean the same thing are put together to make something sound more official or legal.

It's like when you want to make a fancier sandwich, so you use two things that mean the same thing, like "turkey and poultry" or "lettuce and greens". In law, they use legal doublets to make things sound more important or serious.

But sometimes, using a legal doublet can be confusing, because it's like saying the same thing twice. So, lawyers try to use words that are different enough to make sense, but sometimes they still use legal doublets because it's tradition.