Form and rules
How it works
Addition markers include furthermore, moreover, in addition and also; register differs.
Contrast/concession markers include however, nevertheless, on the other hand and even so.
Result markers include therefore, consequently and as a result.
Reformulation/examples use in other words, that is, for example and for instance.
Discourse markers connect ideas at sentence/text level and often require punctuation; they are not interchangeable with conjunctions inside a clause.