Conjunctions are used to join parts of sentences and clauses. There are three basic types: coordinating conjunctions connect two independent clauses; subordinating conjunctions connect a dependent clause to an independent clause; and correlative conjunctions always travel in pairs to join equal parts. Common coordinating conjunctions include and, but, or, yet, and so. Common subordinating conjunctions are because, as, since, so, although, though, whereas, while, and after. Correlative conjunctions include both...and, not only...but also, not...but, either...or, neither...nor, and whether...or.