A conjunction is a word that is used to join words, phrases, and clauses – both independent and dependent clauses – in a sentence. A conjunction is made use of to write a compound sentence or complex sentence. A complex sentence is one that contains an independent clause and at least one subordinate clause. For example,
the independent clauses that made up a compound sentence can be joined by a coordinating conjunction (for, and, nor, but, or, yet, so).
A conjunction can be a word (although, and, because, but, if, or, while) or a phrase (as though, as well as, in order that, so that). There are three groups of conjunctions: