Of a CONJUNCTION.
A Conjunction is a Part of Speech, which serves to connect and join the several Parts of a Discourse together, and is of various Kinds.
Copulative; as and, also, moreover.
Disjunctive; as or, neither, whether.
Adversative; as but, yet, notwithstanding.
Conditional; as if, unless, provided.
Casual; as for, because, forasmuch.
Conclusive; as then, so that, therefore.