Whats the difference between DescendantAdded and ChildAdded?

So I noticed there's not much of a difference between Descendant added and Child Added But just in case can someone tell me the difference in function say I want to check the workspace if an object was added which would be the better one to use?

This is my current script that checks the workspace if a script is added

game.Workspace.ChildAdded:connect(function(instance)
    if instance.ClassName == "Script" then
        instance:Destroy()
    elseif instance.ClassName == "LocalScript" then
        instance:Destroy()
    end
end)

would it be better to keep it at ChildAdded or switch it to DescendantAdded?