A conjunction is a word that joins two or more words, phrases, or clauses. There are three kinds of conjunctions: coordinating, subordinating, and correlative.
There are only seven coordinating conjunctions. They are for, and, nor, but, or, yet, and so. Coordinating conjunctions join together parts of a sentence that are the same. For example, “Would you like pie or cake?” or, “John likes taking walks and riding his bike.”
Coordinating conjunctions can also join two independent clauses. For instance, you might say, “I love coffee,” and also, “It makes my stomach hurt.” You can join these clauses with a conjunction, saying, “I love coffee, but it makes my stomach hurt.”
Subordinating conjunctions allow us to join independent clauses with adverb clauses. For example, “I will bring dessert unless you are baking a cake,” or, “I cry whenever I watch that movie.” Other common subordinating conjunctions are although, because, before, if, since and while, but there are many more!
Correlative conjunctions are used in pairs and have the same function as coordinating conjunctions. For example, “Both Nate and Amy work at the library,” or, “Either Mom or Dad will pick you up from the airport.” In addition to both… and and either… or, other common correlative conjunctions are neither…nor, not… but, whether…or, and not only… but also.