What is the difference between “and” and “but?” They are both conjunctions. They are also known as co-ordinating conjunctions. One is inclusive (and) and the other is “sort of” exclusive (but). I guess that is a difference. On the other hand, I’m the one who declared the two as inclusive and exclusive conjunctions. As far as I know, there’s no formal designation of inclusive and exclusive applied to “and” and “but.” OK, so what’s the point?