A compound sentece has at least two independent clauses (clause that have a subject, a verb and a complete thought which means that they can stand by their own). They are not dependent of each other but they have <em>similar ideas</em>. A <em>coordenator</em> (for, and, but etc) or a semi-colon is used to join two or more independent clauses. <em>The coordenators are coordinating conjunctions.</em>