What is the difference between the words ‘‘moreover’’ and ‘‘furthermore’’?
The exemplary sentences on Merriam-Webster are
‘‘Swimming alone is against the rules and, moreover, it's dangerous.’’
‘‘She always arrives on time; furthermore, her work is always excellent.’’
The difference between these two sentences is that in the first one, we add information that is used to emphasize the argument of the first part of the sentence. Whereas in the second sentence, we only add information, which is not necessarily directly connected to the information given in the first part of the sentence.
Is this the difference between ‘‘moreover’’ and ‘‘furthermore’’? Or can I use them interchangeably?